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Finding the Fourth Proportional to 443,217.64, 663,766.86 and 255,660.52

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Solution

The fourth proportional to 443,217.64, 663,766.86 and 255,660.52 is: 382,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,217.64 : 663,766.86 = 255,660.52 : x
  2. Step 2: Convert to fraction form
    443,217.64/663,766.86 = 255,660.52/x
  3. Step 3: Cross multiply
    443,217.64x = 663,766.86 × 255,660.52
  4. Step 4: Simplify right side
    443,217.64x = 169,698,980,586.37
  5. Step 5: Solve for x
    x = 169,698,980,586.37/443,217.64
  6. Step 6: Final answer
    x = 382,879.57

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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.