Home / 515,151.28-711,253.92-321,853.24

Finding the Fourth Proportional to 515,151.28, 711,253.92 and 321,853.24

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Solution

The fourth proportional to 515,151.28, 711,253.92 and 321,853.24 is: 444,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,151.28 : 711,253.92 = 321,853.24 : x
  2. Step 2: Convert to fraction form
    515,151.28/711,253.92 = 321,853.24/x
  3. Step 3: Cross multiply
    515,151.28x = 711,253.92 × 321,853.24
  4. Step 4: Simplify right side
    515,151.28x = 228,919,378,614.70
  5. Step 5: Solve for x
    x = 228,919,378,614.70/515,151.28
  6. Step 6: Final answer
    x = 444,373.11

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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.