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Finding the Fourth Proportional to 428,788.10, 591,763.92 and 237,863

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Solution

The fourth proportional to 428,788.10, 591,763.92 and 237,863 is: 328,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,788.10 : 591,763.92 = 237,863 : x
  2. Step 2: Convert to fraction form
    428,788.10/591,763.92 = 237,863/x
  3. Step 3: Cross multiply
    428,788.10x = 591,763.92 × 237,863
  4. Step 4: Simplify right side
    428,788.10x = 140,758,741,302.96
  5. Step 5: Solve for x
    x = 140,758,741,302.96/428,788.10
  6. Step 6: Final answer
    x = 328,271.10

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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.