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Finding the Fourth Proportional to 330,414.32, 495,786.11 and 130,878.52

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Solution

The fourth proportional to 330,414.32, 495,786.11 and 130,878.52 is: 196,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,414.32 : 495,786.11 = 130,878.52 : x
  2. Step 2: Convert to fraction form
    330,414.32/495,786.11 = 130,878.52/x
  3. Step 3: Cross multiply
    330,414.32x = 495,786.11 × 130,878.52
  4. Step 4: Simplify right side
    330,414.32x = 64,887,750,419.50
  5. Step 5: Solve for x
    x = 64,887,750,419.50/330,414.32
  6. Step 6: Final answer
    x = 196,382.98

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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.