Home / 345,682.20-518,436.90-132,403.80

Finding the Fourth Proportional to 345,682.20, 518,436.90 and 132,403.80

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Solution

The fourth proportional to 345,682.20, 518,436.90 and 132,403.80 is: 198,572.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,682.20 : 518,436.90 = 132,403.80 : x
  2. Step 2: Convert to fraction form
    345,682.20/518,436.90 = 132,403.80/x
  3. Step 3: Cross multiply
    345,682.20x = 518,436.90 × 132,403.80
  4. Step 4: Simplify right side
    345,682.20x = 68,643,015,620.22
  5. Step 5: Solve for x
    x = 68,643,015,620.22/345,682.20
  6. Step 6: Final answer
    x = 198,572.61

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1.5x scale

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.