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Finding the Fourth Proportional to 591,615.20, 887,422.80 and 217,589.60

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Solution

The fourth proportional to 591,615.20, 887,422.80 and 217,589.60 is: 326,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,615.20 : 887,422.80 = 217,589.60 : x
  2. Step 2: Convert to fraction form
    591,615.20/887,422.80 = 217,589.60/x
  3. Step 3: Cross multiply
    591,615.20x = 887,422.80 × 217,589.60
  4. Step 4: Simplify right side
    591,615.20x = 193,093,972,082.88
  5. Step 5: Solve for x
    x = 193,093,972,082.88/591,615.20
  6. Step 6: Final answer
    x = 326,384.40

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Similar ratio
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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.