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Finding the Fourth Proportional to 225,960.03, 338,939.91 and 85,718.66

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Solution

The fourth proportional to 225,960.03, 338,939.91 and 85,718.66 is: 128,577.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,960.03 : 338,939.91 = 85,718.66 : x
  2. Step 2: Convert to fraction form
    225,960.03/338,939.91 = 85,718.66/x
  3. Step 3: Cross multiply
    225,960.03x = 338,939.91 × 85,718.66
  4. Step 4: Simplify right side
    225,960.03x = 29,053,473,211.02
  5. Step 5: Solve for x
    x = 29,053,473,211.02/225,960.03
  6. Step 6: Final answer
    x = 128,577.93

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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.