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Finding the Fourth Proportional to 330,612.48, 495,616.32 and 143,556.48

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Solution

The fourth proportional to 330,612.48, 495,616.32 and 143,556.48 is: 215,203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,612.48 : 495,616.32 = 143,556.48 : x
  2. Step 2: Convert to fraction form
    330,612.48/495,616.32 = 143,556.48/x
  3. Step 3: Cross multiply
    330,612.48x = 495,616.32 × 143,556.48
  4. Step 4: Simplify right side
    330,612.48x = 71,148,934,329.75
  5. Step 5: Solve for x
    x = 71,148,934,329.75/330,612.48
  6. Step 6: Final answer
    x = 215,203.41

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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.