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Finding the Fourth Proportional to 215,107.92, 322,808.90 and 74,866.55

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Solution

The fourth proportional to 215,107.92, 322,808.90 and 74,866.55 is: 112,350.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,107.92 : 322,808.90 = 74,866.55 : x
  2. Step 2: Convert to fraction form
    215,107.92/322,808.90 = 74,866.55/x
  3. Step 3: Cross multiply
    215,107.92x = 322,808.90 × 74,866.55
  4. Step 4: Simplify right side
    215,107.92x = 24,167,586,663.92
  5. Step 5: Solve for x
    x = 24,167,586,663.92/215,107.92
  6. Step 6: Final answer
    x = 112,350.98

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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.