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Finding the Fourth Proportional to 330,173.70, 495,260.55 and 80,855.70

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Solution

The fourth proportional to 330,173.70, 495,260.55 and 80,855.70 is: 121,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,173.70 : 495,260.55 = 80,855.70 : x
  2. Step 2: Convert to fraction form
    330,173.70/495,260.55 = 80,855.70/x
  3. Step 3: Cross multiply
    330,173.70x = 495,260.55 × 80,855.70
  4. Step 4: Simplify right side
    330,173.70x = 40,044,638,452.64
  5. Step 5: Solve for x
    x = 40,044,638,452.64/330,173.70
  6. Step 6: Final answer
    x = 121,283.55

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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.