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Finding the Fourth Proportional to 212,371.56, 293,134.49 and 126,390.87

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Solution

The fourth proportional to 212,371.56, 293,134.49 and 126,390.87 is: 174,456.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,371.56 : 293,134.49 = 126,390.87 : x
  2. Step 2: Convert to fraction form
    212,371.56/293,134.49 = 126,390.87/x
  3. Step 3: Cross multiply
    212,371.56x = 293,134.49 × 126,390.87
  4. Step 4: Simplify right side
    212,371.56x = 37,049,522,586.15
  5. Step 5: Solve for x
    x = 37,049,522,586.15/212,371.56
  6. Step 6: Final answer
    x = 174,456.14

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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.