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Finding the Fourth Proportional to 327,308.40, 490,865.40 and 127,513.80

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Solution

The fourth proportional to 327,308.40, 490,865.40 and 127,513.80 is: 191,232.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,308.40 : 490,865.40 = 127,513.80 : x
  2. Step 2: Convert to fraction form
    327,308.40/490,865.40 = 127,513.80/x
  3. Step 3: Cross multiply
    327,308.40x = 490,865.40 × 127,513.80
  4. Step 4: Simplify right side
    327,308.40x = 62,592,112,442.52
  5. Step 5: Solve for x
    x = 62,592,112,442.52/327,308.40
  6. Step 6: Final answer
    x = 191,232.83

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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.