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Finding the Fourth Proportional to 392,366.96, 541,447.92 and 217,948.47

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Solution

The fourth proportional to 392,366.96, 541,447.92 and 217,948.47 is: 300,758.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,366.96 : 541,447.92 = 217,948.47 : x
  2. Step 2: Convert to fraction form
    392,366.96/541,447.92 = 217,948.47/x
  3. Step 3: Cross multiply
    392,366.96x = 541,447.92 × 217,948.47
  4. Step 4: Simplify right side
    392,366.96x = 118,007,745,748.68
  5. Step 5: Solve for x
    x = 118,007,745,748.68/392,366.96
  6. Step 6: Final answer
    x = 300,758.62

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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.