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Finding the Fourth Proportional to 547,292.20, 820,938.30 and 252,380.20

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Solution

The fourth proportional to 547,292.20, 820,938.30 and 252,380.20 is: 378,570.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,292.20 : 820,938.30 = 252,380.20 : x
  2. Step 2: Convert to fraction form
    547,292.20/820,938.30 = 252,380.20/x
  3. Step 3: Cross multiply
    547,292.20x = 820,938.30 × 252,380.20
  4. Step 4: Simplify right side
    547,292.20x = 207,188,572,341.66
  5. Step 5: Solve for x
    x = 207,188,572,341.66/547,292.20
  6. Step 6: Final answer
    x = 378,570.30

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Half scale
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Double scale
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Similar ratio
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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.