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Finding the Fourth Proportional to 392,431.65, 541,390.06 and 246,979.55

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Solution

The fourth proportional to 392,431.65, 541,390.06 and 246,979.55 is: 340,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,431.65 : 541,390.06 = 246,979.55 : x
  2. Step 2: Convert to fraction form
    392,431.65/541,390.06 = 246,979.55/x
  3. Step 3: Cross multiply
    392,431.65x = 541,390.06 × 246,979.55
  4. Step 4: Simplify right side
    392,431.65x = 133,712,273,393.27
  5. Step 5: Solve for x
    x = 133,712,273,393.27/392,431.65
  6. Step 6: Final answer
    x = 340,727.55

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1.5x scale

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.