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Finding the Fourth Proportional to 306,139.01, 458,772.40 and 225,543.15

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Solution

The fourth proportional to 306,139.01, 458,772.40 and 225,543.15 is: 337,993.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,139.01 : 458,772.40 = 225,543.15 : x
  2. Step 2: Convert to fraction form
    306,139.01/458,772.40 = 225,543.15/x
  3. Step 3: Cross multiply
    306,139.01x = 458,772.40 × 225,543.15
  4. Step 4: Simplify right side
    306,139.01x = 103,472,969,935.20
  5. Step 5: Solve for x
    x = 103,472,969,935.20/306,139.01
  6. Step 6: Final answer
    x = 337,993.42

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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.