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Finding the Fourth Proportional to 437,181.78, 655,795.92 and 137,685.78

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Solution

The fourth proportional to 437,181.78, 655,795.92 and 137,685.78 is: 206,535.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,181.78 : 655,795.92 = 137,685.78 : x
  2. Step 2: Convert to fraction form
    437,181.78/655,795.92 = 137,685.78/x
  3. Step 3: Cross multiply
    437,181.78x = 655,795.92 × 137,685.78
  4. Step 4: Simplify right side
    437,181.78x = 90,293,772,766.02
  5. Step 5: Solve for x
    x = 90,293,772,766.02/437,181.78
  6. Step 6: Final answer
    x = 206,535.99

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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.