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Finding the Fourth Proportional to 327,570.60, 491,615.10 and 127,986.60

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Solution

The fourth proportional to 327,570.60, 491,615.10 and 127,986.60 is: 192,081.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,570.60 : 491,615.10 = 127,986.60 : x
  2. Step 2: Convert to fraction form
    327,570.60/491,615.10 = 127,986.60/x
  3. Step 3: Cross multiply
    327,570.60x = 491,615.10 × 127,986.60
  4. Step 4: Simplify right side
    327,570.60x = 62,920,145,157.66
  5. Step 5: Solve for x
    x = 62,920,145,157.66/327,570.60
  6. Step 6: Final answer
    x = 192,081.17

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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.