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Finding the Third Proportional to 270,545 and 420,553.50

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Solution

The third proportional to 270,545 and 420,553.50 is: 653,736.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,545 : 420,553.50 = 420,553.50 : x
  2. Step 2: Convert to fraction form
    270,545/420,553.50 = 420,553.50/x
  3. Step 3: Cross multiply
    270,545x = 420,553.50 × 420,553.50
  4. Step 4: Simplify right side
    270,545x = 176,865,246,362.25
  5. Step 5: Solve for x
    x = 176,865,246,362.25/270,545
  6. Step 6: Final answer
    x = 653,736.89

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.