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Finding the Fourth Proportional to 522,680.90, 721,279.23 and 296,321.54

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Solution

The fourth proportional to 522,680.90, 721,279.23 and 296,321.54 is: 408,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,680.90 : 721,279.23 = 296,321.54 : x
  2. Step 2: Convert to fraction form
    522,680.90/721,279.23 = 296,321.54/x
  3. Step 3: Cross multiply
    522,680.90x = 721,279.23 × 296,321.54
  4. Step 4: Simplify right side
    522,680.90x = 213,730,572,203.61
  5. Step 5: Solve for x
    x = 213,730,572,203.61/522,680.90
  6. Step 6: Final answer
    x = 408,912.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.