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Finding the Third Proportional to 148,511 and 243,803

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Solution

The third proportional to 148,511 and 243,803 is: 400,239.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,511 : 243,803 = 243,803 : x
  2. Step 2: Convert to fraction form
    148,511/243,803 = 243,803/x
  3. Step 3: Cross multiply
    148,511x = 243,803 × 243,803
  4. Step 4: Simplify right side
    148,511x = 59,439,902,809
  5. Step 5: Solve for x
    x = 59,439,902,809/148,511
  6. Step 6: Final answer
    x = 400,239.06

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.