Home / 278,818,319.10-418,227,478.65-97,005,071.10

Finding the Fourth Proportional to 278,818,319.10, 418,227,478.65 and 97,005,071.10

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Solution

The fourth proportional to 278,818,319.10, 418,227,478.65 and 97,005,071.10 is: 145,507,606.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,818,319.10 : 418,227,478.65 = 97,005,071.10 : x
  2. Step 2: Convert to fraction form
    278,818,319.10/418,227,478.65 = 97,005,071.10/x
  3. Step 3: Cross multiply
    278,818,319.10x = 418,227,478.65 × 97,005,071.10
  4. Step 4: Simplify right side
    278,818,319.10x = 40,570,186,302,416,976
  5. Step 5: Solve for x
    x = 40,570,186,302,416,976/278,818,319.10
  6. Step 6: Final answer
    x = 145,507,606.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.