Home / 310,621.44-428,554.49-253,161.96

Finding the Fourth Proportional to 310,621.44, 428,554.49 and 253,161.96

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Solution

The fourth proportional to 310,621.44, 428,554.49 and 253,161.96 is: 349,279.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,621.44 : 428,554.49 = 253,161.96 : x
  2. Step 2: Convert to fraction form
    310,621.44/428,554.49 = 253,161.96/x
  3. Step 3: Cross multiply
    310,621.44x = 428,554.49 × 253,161.96
  4. Step 4: Simplify right side
    310,621.44x = 108,493,694,655.20
  5. Step 5: Solve for x
    x = 108,493,694,655.20/310,621.44
  6. Step 6: Final answer
    x = 349,279.48

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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.