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Finding the Fourth Proportional to 485,474.64, 728,133.88 and 204,955.44

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Solution

The fourth proportional to 485,474.64, 728,133.88 and 204,955.44 is: 307,400.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,474.64 : 728,133.88 = 204,955.44 : x
  2. Step 2: Convert to fraction form
    485,474.64/728,133.88 = 204,955.44/x
  3. Step 3: Cross multiply
    485,474.64x = 728,133.88 × 204,955.44
  4. Step 4: Simplify right side
    485,474.64x = 149,234,999,754.31
  5. Step 5: Solve for x
    x = 149,234,999,754.31/485,474.64
  6. Step 6: Final answer
    x = 307,400.20

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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.