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Finding the Fourth Proportional to 341,438.80, 512,158.20 and 131,081.80

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Solution

The fourth proportional to 341,438.80, 512,158.20 and 131,081.80 is: 196,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,438.80 : 512,158.20 = 131,081.80 : x
  2. Step 2: Convert to fraction form
    341,438.80/512,158.20 = 131,081.80/x
  3. Step 3: Cross multiply
    341,438.80x = 512,158.20 × 131,081.80
  4. Step 4: Simplify right side
    341,438.80x = 67,134,618,740.76
  5. Step 5: Solve for x
    x = 67,134,618,740.76/341,438.80
  6. Step 6: Final answer
    x = 196,622.70

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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.