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Finding the Fourth Proportional to 395,625.68, 593,531.88 and 129,385.16

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Solution

The fourth proportional to 395,625.68, 593,531.88 and 129,385.16 is: 194,108.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,625.68 : 593,531.88 = 129,385.16 : x
  2. Step 2: Convert to fraction form
    395,625.68/593,531.88 = 129,385.16/x
  3. Step 3: Cross multiply
    395,625.68x = 593,531.88 × 129,385.16
  4. Step 4: Simplify right side
    395,625.68x = 76,794,217,258.90
  5. Step 5: Solve for x
    x = 76,794,217,258.90/395,625.68
  6. Step 6: Final answer
    x = 194,108.27

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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.