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Finding the Fourth Proportional to 485,260.80, 727,891.20 and 248,524.80

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Solution

The fourth proportional to 485,260.80, 727,891.20 and 248,524.80 is: 372,787.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,260.80 : 727,891.20 = 248,524.80 : x
  2. Step 2: Convert to fraction form
    485,260.80/727,891.20 = 248,524.80/x
  3. Step 3: Cross multiply
    485,260.80x = 727,891.20 × 248,524.80
  4. Step 4: Simplify right side
    485,260.80x = 180,899,014,901.76
  5. Step 5: Solve for x
    x = 180,899,014,901.76/485,260.80
  6. Step 6: Final answer
    x = 372,787.20

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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.