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Finding the Fourth Proportional to 318,280.86, 439,150.48 and 201,951.97

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Solution

The fourth proportional to 318,280.86, 439,150.48 and 201,951.97 is: 278,644.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,280.86 : 439,150.48 = 201,951.97 : x
  2. Step 2: Convert to fraction form
    318,280.86/439,150.48 = 201,951.97/x
  3. Step 3: Cross multiply
    318,280.86x = 439,150.48 × 201,951.97
  4. Step 4: Simplify right side
    318,280.86x = 88,687,302,959.69
  5. Step 5: Solve for x
    x = 88,687,302,959.69/318,280.86
  6. Step 6: Final answer
    x = 278,644.79

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1.5x scale

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.