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Finding the Fourth Proportional to 291,957.60, 438,082.20 and 165,694.80

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Solution

The fourth proportional to 291,957.60, 438,082.20 and 165,694.80 is: 248,624.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,957.60 : 438,082.20 = 165,694.80 : x
  2. Step 2: Convert to fraction form
    291,957.60/438,082.20 = 165,694.80/x
  3. Step 3: Cross multiply
    291,957.60x = 438,082.20 × 165,694.80
  4. Step 4: Simplify right side
    291,957.60x = 72,587,942,512.56
  5. Step 5: Solve for x
    x = 72,587,942,512.56/291,957.60
  6. Step 6: Final answer
    x = 248,624.95

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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.