Home / 639,238.70-958,608.66-239,661.38

Finding the Fourth Proportional to 639,238.70, 958,608.66 and 239,661.38

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Solution

The fourth proportional to 639,238.70, 958,608.66 and 239,661.38 is: 359,398.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,238.70 : 958,608.66 = 239,661.38 : x
  2. Step 2: Convert to fraction form
    639,238.70/958,608.66 = 239,661.38/x
  3. Step 3: Cross multiply
    639,238.70x = 958,608.66 × 239,661.38
  4. Step 4: Simplify right side
    639,238.70x = 229,741,474,335.55
  5. Step 5: Solve for x
    x = 229,741,474,335.55/639,238.70
  6. Step 6: Final answer
    x = 359,398.57

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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.