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Finding the Fourth Proportional to 220,766.78, 304,649.70 and 125,267.78

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Solution

The fourth proportional to 220,766.78, 304,649.70 and 125,267.78 is: 172,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,766.78 : 304,649.70 = 125,267.78 : x
  2. Step 2: Convert to fraction form
    220,766.78/304,649.70 = 125,267.78/x
  3. Step 3: Cross multiply
    220,766.78x = 304,649.70 × 125,267.78
  4. Step 4: Simplify right side
    220,766.78x = 38,162,791,596.67
  5. Step 5: Solve for x
    x = 38,162,791,596.67/220,766.78
  6. Step 6: Final answer
    x = 172,864.74

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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.