Home / 315,003.30-431,226.75-312,752.04

Finding the Fourth Proportional to 315,003.30, 431,226.75 and 312,752.04

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Solution

The fourth proportional to 315,003.30, 431,226.75 and 312,752.04 is: 428,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,003.30 : 431,226.75 = 312,752.04 : x
  2. Step 2: Convert to fraction form
    315,003.30/431,226.75 = 312,752.04/x
  3. Step 3: Cross multiply
    315,003.30x = 431,226.75 × 312,752.04
  4. Step 4: Simplify right side
    315,003.30x = 134,867,045,765.07
  5. Step 5: Solve for x
    x = 134,867,045,765.07/315,003.30
  6. Step 6: Final answer
    x = 428,144.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.