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Finding the Fourth Proportional to 428,908.60, 591,846.12 and 237,874.12

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Solution

The fourth proportional to 428,908.60, 591,846.12 and 237,874.12 is: 328,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,908.60 : 591,846.12 = 237,874.12 : x
  2. Step 2: Convert to fraction form
    428,908.60/591,846.12 = 237,874.12/x
  3. Step 3: Cross multiply
    428,908.60x = 591,846.12 × 237,874.12
  4. Step 4: Simplify right side
    428,908.60x = 140,784,874,970.41
  5. Step 5: Solve for x
    x = 140,784,874,970.41/428,908.60
  6. Step 6: Final answer
    x = 328,239.80

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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.