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Finding the Fourth Proportional to 311,540.79, 467,269.66 and 86,882.41

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Solution

The fourth proportional to 311,540.79, 467,269.66 and 86,882.41 is: 130,312.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,540.79 : 467,269.66 = 86,882.41 : x
  2. Step 2: Convert to fraction form
    311,540.79/467,269.66 = 86,882.41/x
  3. Step 3: Cross multiply
    311,540.79x = 467,269.66 × 86,882.41
  4. Step 4: Simplify right side
    311,540.79x = 40,597,514,180.68
  5. Step 5: Solve for x
    x = 40,597,514,180.68/311,540.79
  6. Step 6: Final answer
    x = 130,312.03

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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.