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Finding the Fourth Proportional to 392,674.40, 541,876.25 and 239,968.13

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Solution

The fourth proportional to 392,674.40, 541,876.25 and 239,968.13 is: 331,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,674.40 : 541,876.25 = 239,968.13 : x
  2. Step 2: Convert to fraction form
    392,674.40/541,876.25 = 239,968.13/x
  3. Step 3: Cross multiply
    392,674.40x = 541,876.25 × 239,968.13
  4. Step 4: Simplify right side
    392,674.40x = 130,033,030,403.91
  5. Step 5: Solve for x
    x = 130,033,030,403.91/392,674.40
  6. Step 6: Final answer
    x = 331,147.21

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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.