Home / 281,175.30-421,799.40-139,093.20

Finding the Fourth Proportional to 281,175.30, 421,799.40 and 139,093.20

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Solution

The fourth proportional to 281,175.30, 421,799.40 and 139,093.20 is: 208,657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,175.30 : 421,799.40 = 139,093.20 : x
  2. Step 2: Convert to fraction form
    281,175.30/421,799.40 = 139,093.20/x
  3. Step 3: Cross multiply
    281,175.30x = 421,799.40 × 139,093.20
  4. Step 4: Simplify right side
    281,175.30x = 58,669,428,304.08
  5. Step 5: Solve for x
    x = 58,669,428,304.08/281,175.30
  6. Step 6: Final answer
    x = 208,657.83

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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.