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Finding the Fourth Proportional to 330,180.80, 495,271.20 and 119,791.40

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Solution

The fourth proportional to 330,180.80, 495,271.20 and 119,791.40 is: 179,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,180.80 : 495,271.20 = 119,791.40 : x
  2. Step 2: Convert to fraction form
    330,180.80/495,271.20 = 119,791.40/x
  3. Step 3: Cross multiply
    330,180.80x = 495,271.20 × 119,791.40
  4. Step 4: Simplify right side
    330,180.80x = 59,329,230,427.68
  5. Step 5: Solve for x
    x = 59,329,230,427.68/330,180.80
  6. Step 6: Final answer
    x = 179,687.10

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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.