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Finding the Fourth Proportional to 281,164.64, 421,703.66 and 91,624.55

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Solution

The fourth proportional to 281,164.64, 421,703.66 and 91,624.55 is: 137,422.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,164.64 : 421,703.66 = 91,624.55 : x
  2. Step 2: Convert to fraction form
    281,164.64/421,703.66 = 91,624.55/x
  3. Step 3: Cross multiply
    281,164.64x = 421,703.66 × 91,624.55
  4. Step 4: Simplify right side
    281,164.64x = 38,638,405,514.21
  5. Step 5: Solve for x
    x = 38,638,405,514.21/281,164.64
  6. Step 6: Final answer
    x = 137,422.71

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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.