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Finding the Fourth Proportional to 426,080.73, 639,120.32 and 248,463.17

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Solution

The fourth proportional to 426,080.73, 639,120.32 and 248,463.17 is: 372,694.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,080.73 : 639,120.32 = 248,463.17 : x
  2. Step 2: Convert to fraction form
    426,080.73/639,120.32 = 248,463.17/x
  3. Step 3: Cross multiply
    426,080.73x = 639,120.32 × 248,463.17
  4. Step 4: Simplify right side
    426,080.73x = 158,797,862,804.27
  5. Step 5: Solve for x
    x = 158,797,862,804.27/426,080.73
  6. Step 6: Final answer
    x = 372,694.31

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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.