Home / 279,388.35-385,564.23-172,020.29

Finding the Fourth Proportional to 279,388.35, 385,564.23 and 172,020.29

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Solution

The fourth proportional to 279,388.35, 385,564.23 and 172,020.29 is: 237,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,388.35 : 385,564.23 = 172,020.29 : x
  2. Step 2: Convert to fraction form
    279,388.35/385,564.23 = 172,020.29/x
  3. Step 3: Cross multiply
    279,388.35x = 385,564.23 × 172,020.29
  4. Step 4: Simplify right side
    279,388.35x = 66,324,868,730.41
  5. Step 5: Solve for x
    x = 66,324,868,730.41/279,388.35
  6. Step 6: Final answer
    x = 237,393.11

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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.