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Finding the Fourth Proportional to 342,079.80, 512,244.90 and 252,850.20

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Solution

The fourth proportional to 342,079.80, 512,244.90 and 252,850.20 is: 378,628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,079.80 : 512,244.90 = 252,850.20 : x
  2. Step 2: Convert to fraction form
    342,079.80/512,244.90 = 252,850.20/x
  3. Step 3: Cross multiply
    342,079.80x = 512,244.90 × 252,850.20
  4. Step 4: Simplify right side
    342,079.80x = 129,521,225,413.98
  5. Step 5: Solve for x
    x = 129,521,225,413.98/342,079.80
  6. Step 6: Final answer
    x = 378,628.69

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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.