Home / 378,331-567,438.18-125,721.16

Finding the Fourth Proportional to 378,331, 567,438.18 and 125,721.16

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Solution

The fourth proportional to 378,331, 567,438.18 and 125,721.16 is: 188,562.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,331 : 567,438.18 = 125,721.16 : x
  2. Step 2: Convert to fraction form
    378,331/567,438.18 = 125,721.16/x
  3. Step 3: Cross multiply
    378,331x = 567,438.18 × 125,721.16
  4. Step 4: Simplify right side
    378,331x = 71,338,986,217.89
  5. Step 5: Solve for x
    x = 71,338,986,217.89/378,331
  6. Step 6: Final answer
    x = 188,562.36

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1.5x scale

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.