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Finding the Fourth Proportional to 664,708.70, 996,947.85 and 243,767.90

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Solution

The fourth proportional to 664,708.70, 996,947.85 and 243,767.90 is: 365,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,708.70 : 996,947.85 = 243,767.90 : x
  2. Step 2: Convert to fraction form
    664,708.70/996,947.85 = 243,767.90/x
  3. Step 3: Cross multiply
    664,708.70x = 996,947.85 × 243,767.90
  4. Step 4: Simplify right side
    664,708.70x = 243,023,883,804.02
  5. Step 5: Solve for x
    x = 243,023,883,804.02/664,708.70
  6. Step 6: Final answer
    x = 365,609.60

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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.