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Finding the Fourth Proportional to 281,126.50, 421,690.16 and 114,914.50

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Solution

The fourth proportional to 281,126.50, 421,690.16 and 114,914.50 is: 172,371.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,126.50 : 421,690.16 = 114,914.50 : x
  2. Step 2: Convert to fraction form
    281,126.50/421,690.16 = 114,914.50/x
  3. Step 3: Cross multiply
    281,126.50x = 421,690.16 × 114,914.50
  4. Step 4: Simplify right side
    281,126.50x = 48,458,313,891.32
  5. Step 5: Solve for x
    x = 48,458,313,891.32/281,126.50
  6. Step 6: Final answer
    x = 172,371.92

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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.