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Finding the Third Proportional to 191,315 and 242,578

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Solution

The third proportional to 191,315 and 242,578 is: 307,576.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,315 : 242,578 = 242,578 : x
  2. Step 2: Convert to fraction form
    191,315/242,578 = 242,578/x
  3. Step 3: Cross multiply
    191,315x = 242,578 × 242,578
  4. Step 4: Simplify right side
    191,315x = 58,844,086,084
  5. Step 5: Solve for x
    x = 58,844,086,084/191,315
  6. Step 6: Final answer
    x = 307,576.96

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.