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Finding the Fourth Proportional to 348,517.60, 522,085.20 and 207,858.40

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Solution

The fourth proportional to 348,517.60, 522,085.20 and 207,858.40 is: 311,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,517.60 : 522,085.20 = 207,858.40 : x
  2. Step 2: Convert to fraction form
    348,517.60/522,085.20 = 207,858.40/x
  3. Step 3: Cross multiply
    348,517.60x = 522,085.20 × 207,858.40
  4. Step 4: Simplify right side
    348,517.60x = 108,519,794,335.68
  5. Step 5: Solve for x
    x = 108,519,794,335.68/348,517.60
  6. Step 6: Final answer
    x = 311,375.36

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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.