Home / 664,364.27-996,704.40-215,085.20

Finding the Fourth Proportional to 664,364.27, 996,704.40 and 215,085.20

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Solution

The fourth proportional to 664,364.27, 996,704.40 and 215,085.20 is: 322,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,364.27 : 996,704.40 = 215,085.20 : x
  2. Step 2: Convert to fraction form
    664,364.27/996,704.40 = 215,085.20/x
  3. Step 3: Cross multiply
    664,364.27x = 996,704.40 × 215,085.20
  4. Step 4: Simplify right side
    664,364.27x = 214,376,365,214.88
  5. Step 5: Solve for x
    x = 214,376,365,214.88/664,364.27
  6. Step 6: Final answer
    x = 322,678.95

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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.