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Finding the Fourth Proportional to 218,644.16, 301,711.80 and 127,987.52

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Solution

The fourth proportional to 218,644.16, 301,711.80 and 127,987.52 is: 176,612.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,644.16 : 301,711.80 = 127,987.52 : x
  2. Step 2: Convert to fraction form
    218,644.16/301,711.80 = 127,987.52/x
  3. Step 3: Cross multiply
    218,644.16x = 301,711.80 × 127,987.52
  4. Step 4: Simplify right side
    218,644.16x = 38,615,345,036.74
  5. Step 5: Solve for x
    x = 38,615,345,036.74/218,644.16
  6. Step 6: Final answer
    x = 176,612.74

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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.