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Finding the Fourth Proportional to 381,153.60, 571,957.20 and 144,520.20

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Solution

The fourth proportional to 381,153.60, 571,957.20 and 144,520.20 is: 216,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,153.60 : 571,957.20 = 144,520.20 : x
  2. Step 2: Convert to fraction form
    381,153.60/571,957.20 = 144,520.20/x
  3. Step 3: Cross multiply
    381,153.60x = 571,957.20 × 144,520.20
  4. Step 4: Simplify right side
    381,153.60x = 82,659,368,935.44
  5. Step 5: Solve for x
    x = 82,659,368,935.44/381,153.60
  6. Step 6: Final answer
    x = 216,866.29

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1.5x scale

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.