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Finding the Fourth Proportional to 392,528.32, 541,687.52 and 220,422.34

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Solution

The fourth proportional to 392,528.32, 541,687.52 and 220,422.34 is: 304,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,528.32 : 541,687.52 = 220,422.34 : x
  2. Step 2: Convert to fraction form
    392,528.32/541,687.52 = 220,422.34/x
  3. Step 3: Cross multiply
    392,528.32x = 541,687.52 × 220,422.34
  4. Step 4: Simplify right side
    392,528.32x = 119,400,030,707.20
  5. Step 5: Solve for x
    x = 119,400,030,707.20/392,528.32
  6. Step 6: Final answer
    x = 304,181.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.