Home / 281,175.60-421,233.69-138,854.28

Finding the Fourth Proportional to 281,175.60, 421,233.69 and 138,854.28

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Solution

The fourth proportional to 281,175.60, 421,233.69 and 138,854.28 is: 208,019.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,175.60 : 421,233.69 = 138,854.28 : x
  2. Step 2: Convert to fraction form
    281,175.60/421,233.69 = 138,854.28/x
  3. Step 3: Cross multiply
    281,175.60x = 421,233.69 × 138,854.28
  4. Step 4: Simplify right side
    281,175.60x = 58,490,101,257.40
  5. Step 5: Solve for x
    x = 58,490,101,257.40/281,175.60
  6. Step 6: Final answer
    x = 208,019.83

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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.