Home / 261,823.28-392,757.39-72,283.61

Finding the Fourth Proportional to 261,823.28, 392,757.39 and 72,283.61

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Solution

The fourth proportional to 261,823.28, 392,757.39 and 72,283.61 is: 108,431.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,823.28 : 392,757.39 = 72,283.61 : x
  2. Step 2: Convert to fraction form
    261,823.28/392,757.39 = 72,283.61/x
  3. Step 3: Cross multiply
    261,823.28x = 392,757.39 × 72,283.61
  4. Step 4: Simplify right side
    261,823.28x = 28,389,922,985.27
  5. Step 5: Solve for x
    x = 28,389,922,985.27/261,823.28
  6. Step 6: Final answer
    x = 108,431.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.