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Finding the Fourth Proportional to 215,256.62, 322,871.81 and 80,294.63

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Solution

The fourth proportional to 215,256.62, 322,871.81 and 80,294.63 is: 120,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,256.62 : 322,871.81 = 80,294.63 : x
  2. Step 2: Convert to fraction form
    215,256.62/322,871.81 = 80,294.63/x
  3. Step 3: Cross multiply
    215,256.62x = 322,871.81 × 80,294.63
  4. Step 4: Simplify right side
    215,256.62x = 25,924,870,505.55
  5. Step 5: Solve for x
    x = 25,924,870,505.55/215,256.62
  6. Step 6: Final answer
    x = 120,437.04

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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.