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Finding the Fourth Proportional to 220,761.78, 304,642.80 and 125,262.78

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Solution

The fourth proportional to 220,761.78, 304,642.80 and 125,262.78 is: 172,857.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,761.78 : 304,642.80 = 125,262.78 : x
  2. Step 2: Convert to fraction form
    220,761.78/304,642.80 = 125,262.78/x
  3. Step 3: Cross multiply
    220,761.78x = 304,642.80 × 125,262.78
  4. Step 4: Simplify right side
    220,761.78x = 38,160,404,034.98
  5. Step 5: Solve for x
    x = 38,160,404,034.98/220,761.78
  6. Step 6: Final answer
    x = 172,857.84

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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.