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Finding the Fourth Proportional to 392,488.74, 541,718.88 and 239,494.16

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Solution

The fourth proportional to 392,488.74, 541,718.88 and 239,494.16 is: 330,553.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,488.74 : 541,718.88 = 239,494.16 : x
  2. Step 2: Convert to fraction form
    392,488.74/541,718.88 = 239,494.16/x
  3. Step 3: Cross multiply
    392,488.74x = 541,718.88 × 239,494.16
  4. Step 4: Simplify right side
    392,488.74x = 129,738,509,476.04
  5. Step 5: Solve for x
    x = 129,738,509,476.04/392,488.74
  6. Step 6: Final answer
    x = 330,553.46

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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.