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Finding the Fourth Proportional to 384,471.20, 576,706.72 and 279,955.28

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Solution

The fourth proportional to 384,471.20, 576,706.72 and 279,955.28 is: 419,932.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,471.20 : 576,706.72 = 279,955.28 : x
  2. Step 2: Convert to fraction form
    384,471.20/576,706.72 = 279,955.28/x
  3. Step 3: Cross multiply
    384,471.20x = 576,706.72 × 279,955.28
  4. Step 4: Simplify right side
    384,471.20x = 161,452,091,275.48
  5. Step 5: Solve for x
    x = 161,452,091,275.48/384,471.20
  6. Step 6: Final answer
    x = 419,932.86

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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.