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Finding the Fourth Proportional to 265,680.63, 398,434.28 and 88,139.97

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Solution

The fourth proportional to 265,680.63, 398,434.28 and 88,139.97 is: 132,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,680.63 : 398,434.28 = 88,139.97 : x
  2. Step 2: Convert to fraction form
    265,680.63/398,434.28 = 88,139.97/x
  3. Step 3: Cross multiply
    265,680.63x = 398,434.28 × 88,139.97
  4. Step 4: Simplify right side
    265,680.63x = 35,117,985,045.47
  5. Step 5: Solve for x
    x = 35,117,985,045.47/265,680.63
  6. Step 6: Final answer
    x = 132,181.20

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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.