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Finding the Third Proportional to 239,449 and 348,643

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Solution

The third proportional to 239,449 and 348,643 is: 507,631.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,449 : 348,643 = 348,643 : x
  2. Step 2: Convert to fraction form
    239,449/348,643 = 348,643/x
  3. Step 3: Cross multiply
    239,449x = 348,643 × 348,643
  4. Step 4: Simplify right side
    239,449x = 121,551,941,449
  5. Step 5: Solve for x
    x = 121,551,941,449/239,449
  6. Step 6: Final answer
    x = 507,631.86

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.