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Finding the Fourth Proportional to 330,331.20, 495,496.80 and 140,742.60

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Solution

The fourth proportional to 330,331.20, 495,496.80 and 140,742.60 is: 211,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,331.20 : 495,496.80 = 140,742.60 : x
  2. Step 2: Convert to fraction form
    330,331.20/495,496.80 = 140,742.60/x
  3. Step 3: Cross multiply
    330,331.20x = 495,496.80 × 140,742.60
  4. Step 4: Simplify right side
    330,331.20x = 69,737,507,923.68
  5. Step 5: Solve for x
    x = 69,737,507,923.68/330,331.20
  6. Step 6: Final answer
    x = 211,113.90

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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.