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Finding the Fourth Proportional to 261,632.20, 392,411.44 and 84,116.65

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Solution

The fourth proportional to 261,632.20, 392,411.44 and 84,116.65 is: 126,163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,632.20 : 392,411.44 = 84,116.65 : x
  2. Step 2: Convert to fraction form
    261,632.20/392,411.44 = 84,116.65/x
  3. Step 3: Cross multiply
    261,632.20x = 392,411.44 × 84,116.65
  4. Step 4: Simplify right side
    261,632.20x = 33,008,335,754.48
  5. Step 5: Solve for x
    x = 33,008,335,754.48/261,632.20
  6. Step 6: Final answer
    x = 126,163.12

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