Home / 319,921.38-479,971.76-140,022.49

Finding the Fourth Proportional to 319,921.38, 479,971.76 and 140,022.49

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Solution

The fourth proportional to 319,921.38, 479,971.76 and 140,022.49 is: 210,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,921.38 : 479,971.76 = 140,022.49 : x
  2. Step 2: Convert to fraction form
    319,921.38/479,971.76 = 140,022.49/x
  3. Step 3: Cross multiply
    319,921.38x = 479,971.76 × 140,022.49
  4. Step 4: Simplify right side
    319,921.38x = 67,206,838,164.89
  5. Step 5: Solve for x
    x = 67,206,838,164.89/319,921.38
  6. Step 6: Final answer
    x = 210,072.98

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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.