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Finding the Fourth Proportional to 392,396.10, 541,671.15 and 265,243.92

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Solution

The fourth proportional to 392,396.10, 541,671.15 and 265,243.92 is: 366,147.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,396.10 : 541,671.15 = 265,243.92 : x
  2. Step 2: Convert to fraction form
    392,396.10/541,671.15 = 265,243.92/x
  3. Step 3: Cross multiply
    392,396.10x = 541,671.15 × 265,243.92
  4. Step 4: Simplify right side
    392,396.10x = 143,674,976,648.31
  5. Step 5: Solve for x
    x = 143,674,976,648.31/392,396.10
  6. Step 6: Final answer
    x = 366,147.82

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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.