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Finding the Fourth Proportional to 206,505.54, 309,790.71 and 88,177.50

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Solution

The fourth proportional to 206,505.54, 309,790.71 and 88,177.50 is: 132,280.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,505.54 : 309,790.71 = 88,177.50 : x
  2. Step 2: Convert to fraction form
    206,505.54/309,790.71 = 88,177.50/x
  3. Step 3: Cross multiply
    206,505.54x = 309,790.71 × 88,177.50
  4. Step 4: Simplify right side
    206,505.54x = 27,316,570,331.03
  5. Step 5: Solve for x
    x = 27,316,570,331.03/206,505.54
  6. Step 6: Final answer
    x = 132,280.08

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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.