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Finding the Fourth Proportional to 428,338.43, 591,074.52 and 237,347.72

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Solution

The fourth proportional to 428,338.43, 591,074.52 and 237,347.72 is: 327,521.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,338.43 : 591,074.52 = 237,347.72 : x
  2. Step 2: Convert to fraction form
    428,338.43/591,074.52 = 237,347.72/x
  3. Step 3: Cross multiply
    428,338.43x = 591,074.52 × 237,347.72
  4. Step 4: Simplify right side
    428,338.43x = 140,290,189,672.09
  5. Step 5: Solve for x
    x = 140,290,189,672.09/428,338.43
  6. Step 6: Final answer
    x = 327,521.84

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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.