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Finding the Fourth Proportional to 215,444, 323,177.52 and 67,711.52

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Solution

The fourth proportional to 215,444, 323,177.52 and 67,711.52 is: 101,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,444 : 323,177.52 = 67,711.52 : x
  2. Step 2: Convert to fraction form
    215,444/323,177.52 = 67,711.52/x
  3. Step 3: Cross multiply
    215,444x = 323,177.52 × 67,711.52
  4. Step 4: Simplify right side
    215,444x = 21,882,841,109.03
  5. Step 5: Solve for x
    x = 21,882,841,109.03/215,444
  6. Step 6: Final answer
    x = 101,570.90

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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.