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Finding the Fourth Proportional to 327,118.95, 490,387.64 and 127,393.20

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Solution

The fourth proportional to 327,118.95, 490,387.64 and 127,393.20 is: 190,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,118.95 : 490,387.64 = 127,393.20 : x
  2. Step 2: Convert to fraction form
    327,118.95/490,387.64 = 127,393.20/x
  3. Step 3: Cross multiply
    327,118.95x = 490,387.64 × 127,393.20
  4. Step 4: Simplify right side
    327,118.95x = 62,472,050,063.08
  5. Step 5: Solve for x
    x = 62,472,050,063.08/327,118.95
  6. Step 6: Final answer
    x = 190,976.55

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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.