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Finding the Fourth Proportional to 281,120.52, 421,680.45 and 91,580.59

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Solution

The fourth proportional to 281,120.52, 421,680.45 and 91,580.59 is: 137,370.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,120.52 : 421,680.45 = 91,580.59 : x
  2. Step 2: Convert to fraction form
    281,120.52/421,680.45 = 91,580.59/x
  3. Step 3: Cross multiply
    281,120.52x = 421,680.45 × 91,580.59
  4. Step 4: Simplify right side
    281,120.52x = 38,617,743,348.26
  5. Step 5: Solve for x
    x = 38,617,743,348.26/281,120.52
  6. Step 6: Final answer
    x = 137,370.77

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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.