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Finding the Third Proportional to 81,298 and 177,428

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Solution

The third proportional to 81,298 and 177,428 is: 387,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,298 : 177,428 = 177,428 : x
  2. Step 2: Convert to fraction form
    81,298/177,428 = 177,428/x
  3. Step 3: Cross multiply
    81,298x = 177,428 × 177,428
  4. Step 4: Simplify right side
    81,298x = 31,480,695,184
  5. Step 5: Solve for x
    x = 31,480,695,184/81,298
  6. Step 6: Final answer
    x = 387,225.95

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.