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Finding the Fourth Proportional to 341,534.40, 512,391.20 and 131,179.20

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Solution

The fourth proportional to 341,534.40, 512,391.20 and 131,179.20 is: 196,803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,534.40 : 512,391.20 = 131,179.20 : x
  2. Step 2: Convert to fraction form
    341,534.40/512,391.20 = 131,179.20/x
  3. Step 3: Cross multiply
    341,534.40x = 512,391.20 × 131,179.20
  4. Step 4: Simplify right side
    341,534.40x = 67,215,067,703.04
  5. Step 5: Solve for x
    x = 67,215,067,703.04/341,534.40
  6. Step 6: Final answer
    x = 196,803.21

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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.