Home / 354,389.16-531,427.77-129,691.20

Finding the Fourth Proportional to 354,389.16, 531,427.77 and 129,691.20

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Solution

The fourth proportional to 354,389.16, 531,427.77 and 129,691.20 is: 194,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,389.16 : 531,427.77 = 129,691.20 : x
  2. Step 2: Convert to fraction form
    354,389.16/531,427.77 = 129,691.20/x
  3. Step 3: Cross multiply
    354,389.16x = 531,427.77 × 129,691.20
  4. Step 4: Simplify right side
    354,389.16x = 68,921,505,204.62
  5. Step 5: Solve for x
    x = 68,921,505,204.62/354,389.16
  6. Step 6: Final answer
    x = 194,479.72

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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.