Home / 285,388.60-428,087.08-135,644.18

Finding the Fourth Proportional to 285,388.60, 428,087.08 and 135,644.18

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Solution

The fourth proportional to 285,388.60, 428,087.08 and 135,644.18 is: 203,468.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,388.60 : 428,087.08 = 135,644.18 : x
  2. Step 2: Convert to fraction form
    285,388.60/428,087.08 = 135,644.18/x
  3. Step 3: Cross multiply
    285,388.60x = 428,087.08 × 135,644.18
  4. Step 4: Simplify right side
    285,388.60x = 58,067,520,935.19
  5. Step 5: Solve for x
    x = 58,067,520,935.19/285,388.60
  6. Step 6: Final answer
    x = 203,468.26

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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.