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Finding the Fourth Proportional to 392,393.28, 541,667.16 and 265,241.10

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Solution

The fourth proportional to 392,393.28, 541,667.16 and 265,241.10 is: 366,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,393.28 : 541,667.16 = 265,241.10 : x
  2. Step 2: Convert to fraction form
    392,393.28/541,667.16 = 265,241.10/x
  3. Step 3: Cross multiply
    392,393.28x = 541,667.16 × 265,241.10
  4. Step 4: Simplify right side
    392,393.28x = 143,672,393,352.28
  5. Step 5: Solve for x
    x = 143,672,393,352.28/392,393.28
  6. Step 6: Final answer
    x = 366,143.87

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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.