Home / 380,711.46-571,067.90-156,031.71

Finding the Fourth Proportional to 380,711.46, 571,067.90 and 156,031.71

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Solution

The fourth proportional to 380,711.46, 571,067.90 and 156,031.71 is: 234,047.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,711.46 : 571,067.90 = 156,031.71 : x
  2. Step 2: Convert to fraction form
    380,711.46/571,067.90 = 156,031.71/x
  3. Step 3: Cross multiply
    380,711.46x = 571,067.90 × 156,031.71
  4. Step 4: Simplify right side
    380,711.46x = 89,104,700,963.11
  5. Step 5: Solve for x
    x = 89,104,700,963.11/380,711.46
  6. Step 6: Final answer
    x = 234,047.86

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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.