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Finding the Third Proportional to 148,300 and 319,928

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Solution

The third proportional to 148,300 and 319,928 is: 690,181.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,300 : 319,928 = 319,928 : x
  2. Step 2: Convert to fraction form
    148,300/319,928 = 319,928/x
  3. Step 3: Cross multiply
    148,300x = 319,928 × 319,928
  4. Step 4: Simplify right side
    148,300x = 102,353,925,184
  5. Step 5: Solve for x
    x = 102,353,925,184/148,300
  6. Step 6: Final answer
    x = 690,181.56

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.