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Finding the Fourth Proportional to 218,707.38, 328,061.08 and 52,495.38

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Solution

The fourth proportional to 218,707.38, 328,061.08 and 52,495.38 is: 78,743.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,707.38 : 328,061.08 = 52,495.38 : x
  2. Step 2: Convert to fraction form
    218,707.38/328,061.08 = 52,495.38/x
  3. Step 3: Cross multiply
    218,707.38x = 328,061.08 × 52,495.38
  4. Step 4: Simplify right side
    218,707.38x = 17,221,691,898.46
  5. Step 5: Solve for x
    x = 17,221,691,898.46/218,707.38
  6. Step 6: Final answer
    x = 78,743.08

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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.