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Finding the Fourth Proportional to 330,616.48, 495,622.32 and 143,560.48

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Solution

The fourth proportional to 330,616.48, 495,622.32 and 143,560.48 is: 215,209.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,616.48 : 495,622.32 = 143,560.48 : x
  2. Step 2: Convert to fraction form
    330,616.48/495,622.32 = 143,560.48/x
  3. Step 3: Cross multiply
    330,616.48x = 495,622.32 × 143,560.48
  4. Step 4: Simplify right side
    330,616.48x = 71,151,778,157.91
  5. Step 5: Solve for x
    x = 71,151,778,157.91/330,616.48
  6. Step 6: Final answer
    x = 215,209.41

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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.