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Finding the Fourth Proportional to 206,221.30, 309,331.71 and 56,462.74

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Solution

The fourth proportional to 206,221.30, 309,331.71 and 56,462.74 is: 84,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,221.30 : 309,331.71 = 56,462.74 : x
  2. Step 2: Convert to fraction form
    206,221.30/309,331.71 = 56,462.74/x
  3. Step 3: Cross multiply
    206,221.30x = 309,331.71 × 56,462.74
  4. Step 4: Simplify right side
    206,221.30x = 17,465,715,915.49
  5. Step 5: Solve for x
    x = 17,465,715,915.49/206,221.30
  6. Step 6: Final answer
    x = 84,694.04

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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.