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Finding the Fourth Proportional to 218,117.40, 306,064.20 and 218,117.40

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Solution

The fourth proportional to 218,117.40, 306,064.20 and 218,117.40 is: 306,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,117.40 : 306,064.20 = 218,117.40 : x
  2. Step 2: Convert to fraction form
    218,117.40/306,064.20 = 218,117.40/x
  3. Step 3: Cross multiply
    218,117.40x = 306,064.20 × 218,117.40
  4. Step 4: Simplify right side
    218,117.40x = 66,757,927,537.08
  5. Step 5: Solve for x
    x = 66,757,927,537.08/218,117.40
  6. Step 6: Final answer
    x = 306,064.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.