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Finding the Fourth Proportional to 428,793.60, 591,771.52 and 237,868.52

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Solution

The fourth proportional to 428,793.60, 591,771.52 and 237,868.52 is: 328,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,793.60 : 591,771.52 = 237,868.52 : x
  2. Step 2: Convert to fraction form
    428,793.60/591,771.52 = 237,868.52/x
  3. Step 3: Cross multiply
    428,793.60x = 591,771.52 × 237,868.52
  4. Step 4: Simplify right side
    428,793.60x = 140,763,815,640.55
  5. Step 5: Solve for x
    x = 140,763,815,640.55/428,793.60
  6. Step 6: Final answer
    x = 328,278.72

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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.