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Finding the Fourth Proportional to 285,631.82, 428,025.42 and 269,655.80

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Solution

The fourth proportional to 285,631.82, 428,025.42 and 269,655.80 is: 404,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,631.82 : 428,025.42 = 269,655.80 : x
  2. Step 2: Convert to fraction form
    285,631.82/428,025.42 = 269,655.80/x
  3. Step 3: Cross multiply
    285,631.82x = 428,025.42 × 269,655.80
  4. Step 4: Simplify right side
    285,631.82x = 115,419,537,050.44
  5. Step 5: Solve for x
    x = 115,419,537,050.44/285,631.82
  6. Step 6: Final answer
    x = 404,085.01

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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.