Home / 403,135.42-556,331.05-231,049.65

Finding the Fourth Proportional to 403,135.42, 556,331.05 and 231,049.65

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Solution

The fourth proportional to 403,135.42, 556,331.05 and 231,049.65 is: 318,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,135.42 : 556,331.05 = 231,049.65 : x
  2. Step 2: Convert to fraction form
    403,135.42/556,331.05 = 231,049.65/x
  3. Step 3: Cross multiply
    403,135.42x = 556,331.05 × 231,049.65
  4. Step 4: Simplify right side
    403,135.42x = 128,540,094,386.63
  5. Step 5: Solve for x
    x = 128,540,094,386.63/403,135.42
  6. Step 6: Final answer
    x = 318,850.91

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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.