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Finding the Fourth Proportional to 327,194.90, 490,695.15 and 127,400.30

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Solution

The fourth proportional to 327,194.90, 490,695.15 and 127,400.30 is: 191,062.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,194.90 : 490,695.15 = 127,400.30 : x
  2. Step 2: Convert to fraction form
    327,194.90/490,695.15 = 127,400.30/x
  3. Step 3: Cross multiply
    327,194.90x = 490,695.15 × 127,400.30
  4. Step 4: Simplify right side
    327,194.90x = 62,514,709,318.55
  5. Step 5: Solve for x
    x = 62,514,709,318.55/327,194.90
  6. Step 6: Final answer
    x = 191,062.60

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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.