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Finding the Fourth Proportional to 278,579, 418,034.54 and 101,099.88

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Solution

The fourth proportional to 278,579, 418,034.54 and 101,099.88 is: 151,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,579 : 418,034.54 = 101,099.88 : x
  2. Step 2: Convert to fraction form
    278,579/418,034.54 = 101,099.88/x
  3. Step 3: Cross multiply
    278,579x = 418,034.54 × 101,099.88
  4. Step 4: Simplify right side
    278,579x = 42,263,241,829.86
  5. Step 5: Solve for x
    x = 42,263,241,829.86/278,579
  6. Step 6: Final answer
    x = 151,710.08

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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.