Home / 217,739.15-300,472.31-122,249.87

Finding the Fourth Proportional to 217,739.15, 300,472.31 and 122,249.87

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Solution

The fourth proportional to 217,739.15, 300,472.31 and 122,249.87 is: 168,700.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,739.15 : 300,472.31 = 122,249.87 : x
  2. Step 2: Convert to fraction form
    217,739.15/300,472.31 = 122,249.87/x
  3. Step 3: Cross multiply
    217,739.15x = 300,472.31 × 122,249.87
  4. Step 4: Simplify right side
    217,739.15x = 36,732,700,836.10
  5. Step 5: Solve for x
    x = 36,732,700,836.10/217,739.15
  6. Step 6: Final answer
    x = 168,700.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.