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Finding the Fourth Proportional to 218,773.47, 328,215.56 and 61,001.92

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Solution

The fourth proportional to 218,773.47, 328,215.56 and 61,001.92 is: 91,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,773.47 : 328,215.56 = 61,001.92 : x
  2. Step 2: Convert to fraction form
    218,773.47/328,215.56 = 61,001.92/x
  3. Step 3: Cross multiply
    218,773.47x = 328,215.56 × 61,001.92
  4. Step 4: Simplify right side
    218,773.47x = 20,021,780,063.66
  5. Step 5: Solve for x
    x = 20,021,780,063.66/218,773.47
  6. Step 6: Final answer
    x = 91,518.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.