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Finding the Fourth Proportional to 285,418.25, 428,128.38 and 95,873.19

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Solution

The fourth proportional to 285,418.25, 428,128.38 and 95,873.19 is: 143,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,418.25 : 428,128.38 = 95,873.19 : x
  2. Step 2: Convert to fraction form
    285,418.25/428,128.38 = 95,873.19/x
  3. Step 3: Cross multiply
    285,418.25x = 428,128.38 × 95,873.19
  4. Step 4: Simplify right side
    285,418.25x = 41,046,033,520.13
  5. Step 5: Solve for x
    x = 41,046,033,520.13/285,418.25
  6. Step 6: Final answer
    x = 143,810.13

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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.