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Finding the Fourth Proportional to 664,320.30, 996,480.45 and 243,760.20

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Solution

The fourth proportional to 664,320.30, 996,480.45 and 243,760.20 is: 365,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,320.30 : 996,480.45 = 243,760.20 : x
  2. Step 2: Convert to fraction form
    664,320.30/996,480.45 = 243,760.20/x
  3. Step 3: Cross multiply
    664,320.30x = 996,480.45 × 243,760.20
  4. Step 4: Simplify right side
    664,320.30x = 242,902,273,788.09
  5. Step 5: Solve for x
    x = 242,902,273,788.09/664,320.30
  6. Step 6: Final answer
    x = 365,640.30

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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.