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Finding the Fourth Proportional to 285,381.02, 428,279.09 and 229,891.02

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Solution

The fourth proportional to 285,381.02, 428,279.09 and 229,891.02 is: 345,003.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,381.02 : 428,279.09 = 229,891.02 : x
  2. Step 2: Convert to fraction form
    285,381.02/428,279.09 = 229,891.02/x
  3. Step 3: Cross multiply
    285,381.02x = 428,279.09 × 229,891.02
  4. Step 4: Simplify right side
    285,381.02x = 98,457,515,695.32
  5. Step 5: Solve for x
    x = 98,457,515,695.32/285,381.02
  6. Step 6: Final answer
    x = 345,003.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.