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Finding the Fourth Proportional to 452,605.60, 679,006.32 and 172,128.16

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Solution

The fourth proportional to 452,605.60, 679,006.32 and 172,128.16 is: 258,229.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,605.60 : 679,006.32 = 172,128.16 : x
  2. Step 2: Convert to fraction form
    452,605.60/679,006.32 = 172,128.16/x
  3. Step 3: Cross multiply
    452,605.60x = 679,006.32 × 172,128.16
  4. Step 4: Simplify right side
    452,605.60x = 116,876,108,489.97
  5. Step 5: Solve for x
    x = 116,876,108,489.97/452,605.60
  6. Step 6: Final answer
    x = 258,229.48

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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.