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Finding the Fourth Proportional to 215,330.80, 322,996.20 and 65,569.90

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Solution

The fourth proportional to 215,330.80, 322,996.20 and 65,569.90 is: 98,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,330.80 : 322,996.20 = 65,569.90 : x
  2. Step 2: Convert to fraction form
    215,330.80/322,996.20 = 65,569.90/x
  3. Step 3: Cross multiply
    215,330.80x = 322,996.20 × 65,569.90
  4. Step 4: Simplify right side
    215,330.80x = 21,178,828,534.38
  5. Step 5: Solve for x
    x = 21,178,828,534.38/215,330.80
  6. Step 6: Final answer
    x = 98,354.85

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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.