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Finding the Fourth Proportional to 285,435.85, 428,172.23 and 95,888.56

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Solution

The fourth proportional to 285,435.85, 428,172.23 and 95,888.56 is: 143,839.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,435.85 : 428,172.23 = 95,888.56 : x
  2. Step 2: Convert to fraction form
    285,435.85/428,172.23 = 95,888.56/x
  3. Step 3: Cross multiply
    285,435.85x = 428,172.23 × 95,888.56
  4. Step 4: Simplify right side
    285,435.85x = 41,056,817,999.43
  5. Step 5: Solve for x
    x = 41,056,817,999.43/285,435.85
  6. Step 6: Final answer
    x = 143,839.04

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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.