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Finding the Fourth Proportional to 341,793.40, 512,779.70 and 131,438.20

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Solution

The fourth proportional to 341,793.40, 512,779.70 and 131,438.20 is: 197,191.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,793.40 : 512,779.70 = 131,438.20 : x
  2. Step 2: Convert to fraction form
    341,793.40/512,779.70 = 131,438.20/x
  3. Step 3: Cross multiply
    341,793.40x = 512,779.70 × 131,438.20
  4. Step 4: Simplify right side
    341,793.40x = 67,398,840,764.54
  5. Step 5: Solve for x
    x = 67,398,840,764.54/341,793.40
  6. Step 6: Final answer
    x = 197,191.76

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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.