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Finding the Fourth Proportional to 218,992.35, 328,472.10 and 61,233.09

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Solution

The fourth proportional to 218,992.35, 328,472.10 and 61,233.09 is: 91,845.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,992.35 : 328,472.10 = 61,233.09 : x
  2. Step 2: Convert to fraction form
    218,992.35/328,472.10 = 61,233.09/x
  3. Step 3: Cross multiply
    218,992.35x = 328,472.10 × 61,233.09
  4. Step 4: Simplify right side
    218,992.35x = 20,113,361,661.79
  5. Step 5: Solve for x
    x = 20,113,361,661.79/218,992.35
  6. Step 6: Final answer
    x = 91,845.04

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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.