Home / 231,479.50-319,450.78-135,985.36

Finding the Fourth Proportional to 231,479.50, 319,450.78 and 135,985.36

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Solution

The fourth proportional to 231,479.50, 319,450.78 and 135,985.36 is: 187,665.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,479.50 : 319,450.78 = 135,985.36 : x
  2. Step 2: Convert to fraction form
    231,479.50/319,450.78 = 135,985.36/x
  3. Step 3: Cross multiply
    231,479.50x = 319,450.78 × 135,985.36
  4. Step 4: Simplify right side
    231,479.50x = 43,440,629,320.58
  5. Step 5: Solve for x
    x = 43,440,629,320.58/231,479.50
  6. Step 6: Final answer
    x = 187,665.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.