Home / 664,435.85-996,812.33-215,157.20

Finding the Fourth Proportional to 664,435.85, 996,812.33 and 215,157.20

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Solution

The fourth proportional to 664,435.85, 996,812.33 and 215,157.20 is: 322,787.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,435.85 : 996,812.33 = 215,157.20 : x
  2. Step 2: Convert to fraction form
    664,435.85/996,812.33 = 215,157.20/x
  3. Step 3: Cross multiply
    664,435.85x = 996,812.33 × 215,157.20
  4. Step 4: Simplify right side
    664,435.85x = 214,471,343,788.43
  5. Step 5: Solve for x
    x = 214,471,343,788.43/664,435.85
  6. Step 6: Final answer
    x = 322,787.14

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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.