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Finding the Third Proportional to 193,435.50 and 420,078

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Solution

The third proportional to 193,435.50 and 420,078 is: 912,270.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,435.50 : 420,078 = 420,078 : x
  2. Step 2: Convert to fraction form
    193,435.50/420,078 = 420,078/x
  3. Step 3: Cross multiply
    193,435.50x = 420,078 × 420,078
  4. Step 4: Simplify right side
    193,435.50x = 176,465,526,084
  5. Step 5: Solve for x
    x = 176,465,526,084/193,435.50
  6. Step 6: Final answer
    x = 912,270.63

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.