Home / 403,187.76-556,422-231,134.16

Finding the Fourth Proportional to 403,187.76, 556,422 and 231,134.16

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Solution

The fourth proportional to 403,187.76, 556,422 and 231,134.16 is: 318,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,187.76 : 556,422 = 231,134.16 : x
  2. Step 2: Convert to fraction form
    403,187.76/556,422 = 231,134.16/x
  3. Step 3: Cross multiply
    403,187.76x = 556,422 × 231,134.16
  4. Step 4: Simplify right side
    403,187.76x = 128,608,131,575.52
  5. Step 5: Solve for x
    x = 128,608,131,575.52/403,187.76
  6. Step 6: Final answer
    x = 318,978.26

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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.