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Finding the Fourth Proportional to 408,076.10, 612,114.15 and 221,452.10

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Solution

The fourth proportional to 408,076.10, 612,114.15 and 221,452.10 is: 332,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,076.10 : 612,114.15 = 221,452.10 : x
  2. Step 2: Convert to fraction form
    408,076.10/612,114.15 = 221,452.10/x
  3. Step 3: Cross multiply
    408,076.10x = 612,114.15 × 221,452.10
  4. Step 4: Simplify right side
    408,076.10x = 135,553,963,957.22
  5. Step 5: Solve for x
    x = 135,553,963,957.22/408,076.10
  6. Step 6: Final answer
    x = 332,178.15

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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.