Home / 381,946.32-572,981.45-129,242.39

Finding the Fourth Proportional to 381,946.32, 572,981.45 and 129,242.39

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Solution

The fourth proportional to 381,946.32, 572,981.45 and 129,242.39 is: 193,884.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,946.32 : 572,981.45 = 129,242.39 : x
  2. Step 2: Convert to fraction form
    381,946.32/572,981.45 = 129,242.39/x
  3. Step 3: Cross multiply
    381,946.32x = 572,981.45 × 129,242.39
  4. Step 4: Simplify right side
    381,946.32x = 74,053,488,512.55
  5. Step 5: Solve for x
    x = 74,053,488,512.55/381,946.32
  6. Step 6: Final answer
    x = 193,884.55

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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.