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Finding the Fourth Proportional to 226,678.47, 312,803.92 and 124,687.47

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Solution

The fourth proportional to 226,678.47, 312,803.92 and 124,687.47 is: 172,061.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,678.47 : 312,803.92 = 124,687.47 : x
  2. Step 2: Convert to fraction form
    226,678.47/312,803.92 = 124,687.47/x
  3. Step 3: Cross multiply
    226,678.47x = 312,803.92 × 124,687.47
  4. Step 4: Simplify right side
    226,678.47x = 39,002,729,390.88
  5. Step 5: Solve for x
    x = 39,002,729,390.88/226,678.47
  6. Step 6: Final answer
    x = 172,061.91

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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.