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Finding the Fourth Proportional to 426,086.73, 639,129.33 and 248,469.18

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Solution

The fourth proportional to 426,086.73, 639,129.33 and 248,469.18 is: 372,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,086.73 : 639,129.33 = 248,469.18 : x
  2. Step 2: Convert to fraction form
    426,086.73/639,129.33 = 248,469.18/x
  3. Step 3: Cross multiply
    426,086.73x = 639,129.33 × 248,469.18
  4. Step 4: Simplify right side
    426,086.73x = 158,803,940,539.05
  5. Step 5: Solve for x
    x = 158,803,940,539.05/426,086.73
  6. Step 6: Final answer
    x = 372,703.32

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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.