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Finding the Fourth Proportional to 408,476.20, 612,714.30 and 303,500.20

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Solution

The fourth proportional to 408,476.20, 612,714.30 and 303,500.20 is: 455,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,476.20 : 612,714.30 = 303,500.20 : x
  2. Step 2: Convert to fraction form
    408,476.20/612,714.30 = 303,500.20/x
  3. Step 3: Cross multiply
    408,476.20x = 612,714.30 × 303,500.20
  4. Step 4: Simplify right side
    408,476.20x = 185,958,912,592.86
  5. Step 5: Solve for x
    x = 185,958,912,592.86/408,476.20
  6. Step 6: Final answer
    x = 455,250.30

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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.