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Finding the Fourth Proportional to 285,670.98, 428,137.41 and 135,957.16

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Solution

The fourth proportional to 285,670.98, 428,137.41 and 135,957.16 is: 203,760.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,670.98 : 428,137.41 = 135,957.16 : x
  2. Step 2: Convert to fraction form
    285,670.98/428,137.41 = 135,957.16/x
  3. Step 3: Cross multiply
    285,670.98x = 428,137.41 × 135,957.16
  4. Step 4: Simplify right side
    285,670.98x = 58,208,345,673.57
  5. Step 5: Solve for x
    x = 58,208,345,673.57/285,670.98
  6. Step 6: Final answer
    x = 203,760.09

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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.