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Finding the Fourth Proportional to 330,195.80, 495,127.38 and 161,728.76

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Solution

The fourth proportional to 330,195.80, 495,127.38 and 161,728.76 is: 242,511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,195.80 : 495,127.38 = 161,728.76 : x
  2. Step 2: Convert to fraction form
    330,195.80/495,127.38 = 161,728.76/x
  3. Step 3: Cross multiply
    330,195.80x = 495,127.38 × 161,728.76
  4. Step 4: Simplify right side
    330,195.80x = 80,076,337,209.45
  5. Step 5: Solve for x
    x = 80,076,337,209.45/330,195.80
  6. Step 6: Final answer
    x = 242,511.68

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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.