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Finding the Fourth Proportional to 218,902.89, 328,327.17 and 58,991.33

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Solution

The fourth proportional to 218,902.89, 328,327.17 and 58,991.33 is: 88,479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,902.89 : 328,327.17 = 58,991.33 : x
  2. Step 2: Convert to fraction form
    218,902.89/328,327.17 = 58,991.33/x
  3. Step 3: Cross multiply
    218,902.89x = 328,327.17 × 58,991.33
  4. Step 4: Simplify right side
    218,902.89x = 19,368,457,033.04
  5. Step 5: Solve for x
    x = 19,368,457,033.04/218,902.89
  6. Step 6: Final answer
    x = 88,479.68

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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.