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Finding the Third Proportional to 72,306 and 155,715

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Solution

The third proportional to 72,306 and 155,715 is: 335,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,306 : 155,715 = 155,715 : x
  2. Step 2: Convert to fraction form
    72,306/155,715 = 155,715/x
  3. Step 3: Cross multiply
    72,306x = 155,715 × 155,715
  4. Step 4: Simplify right side
    72,306x = 24,247,161,225
  5. Step 5: Solve for x
    x = 24,247,161,225/72,306
  6. Step 6: Final answer
    x = 335,340.93

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.