Home / 664,721.55-996,873.17-215,338.16

Finding the Fourth Proportional to 664,721.55, 996,873.17 and 215,338.16

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Solution

The fourth proportional to 664,721.55, 996,873.17 and 215,338.16 is: 322,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,721.55 : 996,873.17 = 215,338.16 : x
  2. Step 2: Convert to fraction form
    664,721.55/996,873.17 = 215,338.16/x
  3. Step 3: Cross multiply
    664,721.55x = 996,873.17 × 215,338.16
  4. Step 4: Simplify right side
    664,721.55x = 214,664,828,120.11
  5. Step 5: Solve for x
    x = 214,664,828,120.11/664,721.55
  6. Step 6: Final answer
    x = 322,939.47

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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.