Home / 403,918.64-557,410.38-231,790.70

Finding the Fourth Proportional to 403,918.64, 557,410.38 and 231,790.70

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Solution

The fourth proportional to 403,918.64, 557,410.38 and 231,790.70 is: 319,872.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,918.64 : 557,410.38 = 231,790.70 : x
  2. Step 2: Convert to fraction form
    403,918.64/557,410.38 = 231,790.70/x
  3. Step 3: Cross multiply
    403,918.64x = 557,410.38 × 231,790.70
  4. Step 4: Simplify right side
    403,918.64x = 129,202,542,167.47
  5. Step 5: Solve for x
    x = 129,202,542,167.47/403,918.64
  6. Step 6: Final answer
    x = 319,872.69

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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.