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Finding the Fourth Proportional to 281,010.59, 421,182.81 and 130,940.18

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Solution

The fourth proportional to 281,010.59, 421,182.81 and 130,940.18 is: 196,255.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,010.59 : 421,182.81 = 130,940.18 : x
  2. Step 2: Convert to fraction form
    281,010.59/421,182.81 = 130,940.18/x
  3. Step 3: Cross multiply
    281,010.59x = 421,182.81 × 130,940.18
  4. Step 4: Simplify right side
    281,010.59x = 55,149,750,848.39
  5. Step 5: Solve for x
    x = 55,149,750,848.39/281,010.59
  6. Step 6: Final answer
    x = 196,255.07

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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.