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Finding the Fourth Proportional to 218,060.33, 300,879.14 and 127,398.78

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Solution

The fourth proportional to 218,060.33, 300,879.14 and 127,398.78 is: 175,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,060.33 : 300,879.14 = 127,398.78 : x
  2. Step 2: Convert to fraction form
    218,060.33/300,879.14 = 127,398.78/x
  3. Step 3: Cross multiply
    218,060.33x = 300,879.14 × 127,398.78
  4. Step 4: Simplify right side
    218,060.33x = 38,331,635,681.95
  5. Step 5: Solve for x
    x = 38,331,635,681.95/218,060.33
  6. Step 6: Final answer
    x = 175,784.55

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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.