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Finding the Third Proportional to 145,422 and 308,424

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Solution

The third proportional to 145,422 and 308,424 is: 654,133.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,422 : 308,424 = 308,424 : x
  2. Step 2: Convert to fraction form
    145,422/308,424 = 308,424/x
  3. Step 3: Cross multiply
    145,422x = 308,424 × 308,424
  4. Step 4: Simplify right side
    145,422x = 95,125,363,776
  5. Step 5: Solve for x
    x = 95,125,363,776/145,422
  6. Step 6: Final answer
    x = 654,133.24

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.