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Finding the Third Proportional to 145,722 and 320,028

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Solution

The third proportional to 145,722 and 320,028 is: 702,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,722 : 320,028 = 320,028 : x
  2. Step 2: Convert to fraction form
    145,722/320,028 = 320,028/x
  3. Step 3: Cross multiply
    145,722x = 320,028 × 320,028
  4. Step 4: Simplify right side
    145,722x = 102,417,920,784
  5. Step 5: Solve for x
    x = 102,417,920,784/145,722
  6. Step 6: Final answer
    x = 702,830.88

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.