Home / 327,112.95-490,378.64-127,387.20

Finding the Fourth Proportional to 327,112.95, 490,378.64 and 127,387.20

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Solution

The fourth proportional to 327,112.95, 490,378.64 and 127,387.20 is: 190,967.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,112.95 : 490,378.64 = 127,387.20 : x
  2. Step 2: Convert to fraction form
    327,112.95/490,378.64 = 127,387.20/x
  3. Step 3: Cross multiply
    327,112.95x = 490,378.64 × 127,387.20
  4. Step 4: Simplify right side
    327,112.95x = 62,467,961,252.47
  5. Step 5: Solve for x
    x = 62,467,961,252.47/327,112.95
  6. Step 6: Final answer
    x = 190,967.56

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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.