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Finding the Fourth Proportional to 330,101.70, 495,152.55 and 80,783.70

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Solution

The fourth proportional to 330,101.70, 495,152.55 and 80,783.70 is: 121,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,101.70 : 495,152.55 = 80,783.70 : x
  2. Step 2: Convert to fraction form
    330,101.70/495,152.55 = 80,783.70/x
  3. Step 3: Cross multiply
    330,101.70x = 495,152.55 × 80,783.70
  4. Step 4: Simplify right side
    330,101.70x = 40,000,255,053.44
  5. Step 5: Solve for x
    x = 40,000,255,053.44/330,101.70
  6. Step 6: Final answer
    x = 121,175.55

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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.