Home / 319,921.51-479,971.94-140,022.61

Finding the Fourth Proportional to 319,921.51, 479,971.94 and 140,022.61

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Solution

The fourth proportional to 319,921.51, 479,971.94 and 140,022.61 is: 210,073.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,921.51 : 479,971.94 = 140,022.61 : x
  2. Step 2: Convert to fraction form
    319,921.51/479,971.94 = 140,022.61/x
  3. Step 3: Cross multiply
    319,921.51x = 479,971.94 × 140,022.61
  4. Step 4: Simplify right side
    319,921.51x = 67,206,924,715.58
  5. Step 5: Solve for x
    x = 67,206,924,715.58/319,921.51
  6. Step 6: Final answer
    x = 210,073.17

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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.