Home / 261,821.52-392,724.45-72,293.49

Finding the Fourth Proportional to 261,821.52, 392,724.45 and 72,293.49

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Solution

The fourth proportional to 261,821.52, 392,724.45 and 72,293.49 is: 108,438.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,821.52 : 392,724.45 = 72,293.49 : x
  2. Step 2: Convert to fraction form
    261,821.52/392,724.45 = 72,293.49/x
  3. Step 3: Cross multiply
    261,821.52x = 392,724.45 × 72,293.49
  4. Step 4: Simplify right side
    261,821.52x = 28,391,421,098.83
  5. Step 5: Solve for x
    x = 28,391,421,098.83/261,821.52
  6. Step 6: Final answer
    x = 108,438.07

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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.