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Finding the Third Proportional to 128,864.81 and 276,800.06

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Solution

The third proportional to 128,864.81 and 276,800.06 is: 594,563.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,864.81 : 276,800.06 = 276,800.06 : x
  2. Step 2: Convert to fraction form
    128,864.81/276,800.06 = 276,800.06/x
  3. Step 3: Cross multiply
    128,864.81x = 276,800.06 × 276,800.06
  4. Step 4: Simplify right side
    128,864.81x = 76,618,274,600.00
  5. Step 5: Solve for x
    x = 76,618,274,600.00/128,864.81
  6. Step 6: Final answer
    x = 594,563.19

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.