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Finding the Fourth Proportional to 285,968.52, 428,673.87 and 136,168.56

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Solution

The fourth proportional to 285,968.52, 428,673.87 and 136,168.56 is: 204,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,968.52 : 428,673.87 = 136,168.56 : x
  2. Step 2: Convert to fraction form
    285,968.52/428,673.87 = 136,168.56/x
  3. Step 3: Cross multiply
    285,968.52x = 428,673.87 × 136,168.56
  4. Step 4: Simplify right side
    285,968.52x = 58,371,903,587.53
  5. Step 5: Solve for x
    x = 58,371,903,587.53/285,968.52
  6. Step 6: Final answer
    x = 204,120.03

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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.