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Finding the Fourth Proportional to 255,217.80, 382,544.64 and 105,375.48

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Solution

The fourth proportional to 255,217.80, 382,544.64 and 105,375.48 is: 157,946.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,217.80 : 382,544.64 = 105,375.48 : x
  2. Step 2: Convert to fraction form
    255,217.80/382,544.64 = 105,375.48/x
  3. Step 3: Cross multiply
    255,217.80x = 382,544.64 × 105,375.48
  4. Step 4: Simplify right side
    255,217.80x = 40,310,825,061.43
  5. Step 5: Solve for x
    x = 40,310,825,061.43/255,217.80
  6. Step 6: Final answer
    x = 157,946.76

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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.