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Finding the Fourth Proportional to 231,799.70, 347,699.55 and 82,038.80

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Solution

The fourth proportional to 231,799.70, 347,699.55 and 82,038.80 is: 123,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,799.70 : 347,699.55 = 82,038.80 : x
  2. Step 2: Convert to fraction form
    231,799.70/347,699.55 = 82,038.80/x
  3. Step 3: Cross multiply
    231,799.70x = 347,699.55 × 82,038.80
  4. Step 4: Simplify right side
    231,799.70x = 28,524,853,842.54
  5. Step 5: Solve for x
    x = 28,524,853,842.54/231,799.70
  6. Step 6: Final answer
    x = 123,058.20

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1.5x scale

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.