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Finding the Fourth Proportional to 215,371.91, 297,230.41 and 124,729.47

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Solution

The fourth proportional to 215,371.91, 297,230.41 and 124,729.47 is: 172,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,371.91 : 297,230.41 = 124,729.47 : x
  2. Step 2: Convert to fraction form
    215,371.91/297,230.41 = 124,729.47/x
  3. Step 3: Cross multiply
    215,371.91x = 297,230.41 × 124,729.47
  4. Step 4: Simplify right side
    215,371.91x = 37,073,391,663.09
  5. Step 5: Solve for x
    x = 37,073,391,663.09/215,371.91
  6. Step 6: Final answer
    x = 172,136.61

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1.5x scale

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.