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Finding the Third Proportional to 84,315 and 176,424

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Solution

The third proportional to 84,315 and 176,424 is: 369,156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,315 : 176,424 = 176,424 : x
  2. Step 2: Convert to fraction form
    84,315/176,424 = 176,424/x
  3. Step 3: Cross multiply
    84,315x = 176,424 × 176,424
  4. Step 4: Simplify right side
    84,315x = 31,125,427,776
  5. Step 5: Solve for x
    x = 31,125,427,776/84,315
  6. Step 6: Final answer
    x = 369,156.47

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.