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Finding the Fourth Proportional to 428,430.80, 591,234.56 and 237,456.52

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Solution

The fourth proportional to 428,430.80, 591,234.56 and 237,456.52 is: 327,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,430.80 : 591,234.56 = 237,456.52 : x
  2. Step 2: Convert to fraction form
    428,430.80/591,234.56 = 237,456.52/x
  3. Step 3: Cross multiply
    428,430.80x = 591,234.56 × 237,456.52
  4. Step 4: Simplify right side
    428,430.80x = 140,392,501,121.33
  5. Step 5: Solve for x
    x = 140,392,501,121.33/428,430.80
  6. Step 6: Final answer
    x = 327,690.03

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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.