Home / 220,840.32-304,761.06-125,348.61

Finding the Fourth Proportional to 220,840.32, 304,761.06 and 125,348.61

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Solution

The fourth proportional to 220,840.32, 304,761.06 and 125,348.61 is: 172,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,840.32 : 304,761.06 = 125,348.61 : x
  2. Step 2: Convert to fraction form
    220,840.32/304,761.06 = 125,348.61/x
  3. Step 3: Cross multiply
    220,840.32x = 304,761.06 × 125,348.61
  4. Step 4: Simplify right side
    220,840.32x = 38,201,375,253.13
  5. Step 5: Solve for x
    x = 38,201,375,253.13/220,840.32
  6. Step 6: Final answer
    x = 172,981.89

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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.