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Finding the Fourth Proportional to 381,382.67, 572,166.50 and 115,127.28

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Solution

The fourth proportional to 381,382.67, 572,166.50 and 115,127.28 is: 172,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,382.67 : 572,166.50 = 115,127.28 : x
  2. Step 2: Convert to fraction form
    381,382.67/572,166.50 = 115,127.28/x
  3. Step 3: Cross multiply
    381,382.67x = 572,166.50 × 115,127.28
  4. Step 4: Simplify right side
    381,382.67x = 65,871,972,276.48
  5. Step 5: Solve for x
    x = 65,871,972,276.48/381,382.67
  6. Step 6: Final answer
    x = 172,718.84

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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.