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Finding the Fourth Proportional to 319,371.89, 479,057.90 and 129,935.34

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Solution

The fourth proportional to 319,371.89, 479,057.90 and 129,935.34 is: 194,903.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,371.89 : 479,057.90 = 129,935.34 : x
  2. Step 2: Convert to fraction form
    319,371.89/479,057.90 = 129,935.34/x
  3. Step 3: Cross multiply
    319,371.89x = 479,057.90 × 129,935.34
  4. Step 4: Simplify right side
    319,371.89x = 62,246,550,466.51
  5. Step 5: Solve for x
    x = 62,246,550,466.51/319,371.89
  6. Step 6: Final answer
    x = 194,903.04

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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.