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Finding the Fourth Proportional to 491,537.72, 736,125.60 and 280,535.96

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Solution

The fourth proportional to 491,537.72, 736,125.60 and 280,535.96 is: 420,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,537.72 : 736,125.60 = 280,535.96 : x
  2. Step 2: Convert to fraction form
    491,537.72/736,125.60 = 280,535.96/x
  3. Step 3: Cross multiply
    491,537.72x = 736,125.60 × 280,535.96
  4. Step 4: Simplify right side
    491,537.72x = 206,509,701,876.58
  5. Step 5: Solve for x
    x = 206,509,701,876.58/491,537.72
  6. Step 6: Final answer
    x = 420,129.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.