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Finding the Fourth Proportional to 204,565.55, 306,890.24 and 86,237.10

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Solution

The fourth proportional to 204,565.55, 306,890.24 and 86,237.10 is: 129,373.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,565.55 : 306,890.24 = 86,237.10 : x
  2. Step 2: Convert to fraction form
    204,565.55/306,890.24 = 86,237.10/x
  3. Step 3: Cross multiply
    204,565.55x = 306,890.24 × 86,237.10
  4. Step 4: Simplify right side
    204,565.55x = 26,465,323,884.72
  5. Step 5: Solve for x
    x = 26,465,323,884.72/204,565.55
  6. Step 6: Final answer
    x = 129,373.32

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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.