Home / 261,823.92-392,706.47-72,311.23

Finding the Fourth Proportional to 261,823.92, 392,706.47 and 72,311.23

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Solution

The fourth proportional to 261,823.92, 392,706.47 and 72,311.23 is: 108,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,823.92 : 392,706.47 = 72,311.23 : x
  2. Step 2: Convert to fraction form
    261,823.92/392,706.47 = 72,311.23/x
  3. Step 3: Cross multiply
    261,823.92x = 392,706.47 × 72,311.23
  4. Step 4: Simplify right side
    261,823.92x = 28,397,087,874.66
  5. Step 5: Solve for x
    x = 28,397,087,874.66/261,823.92
  6. Step 6: Final answer
    x = 108,458.72

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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.