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Finding the Third Proportional to 74,220 and 151,031

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Solution

The third proportional to 74,220 and 151,031 is: 307,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220 : 151,031 = 151,031 : x
  2. Step 2: Convert to fraction form
    74,220/151,031 = 151,031/x
  3. Step 3: Cross multiply
    74,220x = 151,031 × 151,031
  4. Step 4: Simplify right side
    74,220x = 22,810,362,961
  5. Step 5: Solve for x
    x = 22,810,362,961/74,220
  6. Step 6: Final answer
    x = 307,334.45

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.