Home / 668,438.97-1,002,691.31-218,977.71

Finding the Fourth Proportional to 668,438.97, 1,002,691.31 and 218,977.71

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Solution

The fourth proportional to 668,438.97, 1,002,691.31 and 218,977.71 is: 328,477.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,438.97 : 1,002,691.31 = 218,977.71 : x
  2. Step 2: Convert to fraction form
    668,438.97/1,002,691.31 = 218,977.71/x
  3. Step 3: Cross multiply
    668,438.97x = 1,002,691.31 × 218,977.71
  4. Step 4: Simplify right side
    668,438.97x = 219,567,045,805.81
  5. Step 5: Solve for x
    x = 219,567,045,805.81/668,438.97
  6. Step 6: Final answer
    x = 328,477.33

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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.