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Finding the Third Proportional to 306,031.50 and 656,349

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Solution

The third proportional to 306,031.50 and 656,349 is: 1,407,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,031.50 : 656,349 = 656,349 : x
  2. Step 2: Convert to fraction form
    306,031.50/656,349 = 656,349/x
  3. Step 3: Cross multiply
    306,031.50x = 656,349 × 656,349
  4. Step 4: Simplify right side
    306,031.50x = 430,794,009,801
  5. Step 5: Solve for x
    x = 430,794,009,801/306,031.50
  6. Step 6: Final answer
    x = 1,407,678.65

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.