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Finding the Fourth Proportional to 210,662.44, 290,715.20 and 115,169.14

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Solution

The fourth proportional to 210,662.44, 290,715.20 and 115,169.14 is: 158,933.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,662.44 : 290,715.20 = 115,169.14 : x
  2. Step 2: Convert to fraction form
    210,662.44/290,715.20 = 115,169.14/x
  3. Step 3: Cross multiply
    210,662.44x = 290,715.20 × 115,169.14
  4. Step 4: Simplify right side
    210,662.44x = 33,481,419,568.93
  5. Step 5: Solve for x
    x = 33,481,419,568.93/210,662.44
  6. Step 6: Final answer
    x = 158,933.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.