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Finding the Fourth Proportional to 664,706.70, 996,944.85 and 243,765.90

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Solution

The fourth proportional to 664,706.70, 996,944.85 and 243,765.90 is: 365,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,706.70 : 996,944.85 = 243,765.90 : x
  2. Step 2: Convert to fraction form
    664,706.70/996,944.85 = 243,765.90/x
  3. Step 3: Cross multiply
    664,706.70x = 996,944.85 × 243,765.90
  4. Step 4: Simplify right side
    664,706.70x = 243,021,158,610.62
  5. Step 5: Solve for x
    x = 243,021,158,610.62/664,706.70
  6. Step 6: Final answer
    x = 365,606.60

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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.