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Finding the Fourth Proportional to 428,375.20, 591,161.20 and 237,391.76

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Solution

The fourth proportional to 428,375.20, 591,161.20 and 237,391.76 is: 327,602.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,375.20 : 591,161.20 = 237,391.76 : x
  2. Step 2: Convert to fraction form
    428,375.20/591,161.20 = 237,391.76/x
  3. Step 3: Cross multiply
    428,375.20x = 591,161.20 × 237,391.76
  4. Step 4: Simplify right side
    428,375.20x = 140,336,797,711.71
  5. Step 5: Solve for x
    x = 140,336,797,711.71/428,375.20
  6. Step 6: Final answer
    x = 327,602.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.