Home / 285,964.36-428,667.62-136,164.40

Finding the Fourth Proportional to 285,964.36, 428,667.62 and 136,164.40

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Solution

The fourth proportional to 285,964.36, 428,667.62 and 136,164.40 is: 204,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,964.36 : 428,667.62 = 136,164.40 : x
  2. Step 2: Convert to fraction form
    285,964.36/428,667.62 = 136,164.40/x
  3. Step 3: Cross multiply
    285,964.36x = 428,667.62 × 136,164.40
  4. Step 4: Simplify right side
    285,964.36x = 58,369,269,276.73
  5. Step 5: Solve for x
    x = 58,369,269,276.73/285,964.36
  6. Step 6: Final answer
    x = 204,113.79

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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.