Home / 403,719.58-557,133.96-231,643.72

Finding the Fourth Proportional to 403,719.58, 557,133.96 and 231,643.72

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Solution

The fourth proportional to 403,719.58, 557,133.96 and 231,643.72 is: 319,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,719.58 : 557,133.96 = 231,643.72 : x
  2. Step 2: Convert to fraction form
    403,719.58/557,133.96 = 231,643.72/x
  3. Step 3: Cross multiply
    403,719.58x = 557,133.96 × 231,643.72
  4. Step 4: Simplify right side
    403,719.58x = 129,056,583,032.73
  5. Step 5: Solve for x
    x = 129,056,583,032.73/403,719.58
  6. Step 6: Final answer
    x = 319,668.87

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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.