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Finding the Fourth Proportional to 330,196.20, 495,488.70 and 119,855.40

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Solution

The fourth proportional to 330,196.20, 495,488.70 and 119,855.40 is: 179,853.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,196.20 : 495,488.70 = 119,855.40 : x
  2. Step 2: Convert to fraction form
    330,196.20/495,488.70 = 119,855.40/x
  3. Step 3: Cross multiply
    330,196.20x = 495,488.70 × 119,855.40
  4. Step 4: Simplify right side
    330,196.20x = 59,386,996,333.98
  5. Step 5: Solve for x
    x = 59,386,996,333.98/330,196.20
  6. Step 6: Final answer
    x = 179,853.66

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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.