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Finding the Third Proportional to 276,139.13 and 405,141.75

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Solution

The third proportional to 276,139.13 and 405,141.75 is: 594,409.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,139.13 : 405,141.75 = 405,141.75 : x
  2. Step 2: Convert to fraction form
    276,139.13/405,141.75 = 405,141.75/x
  3. Step 3: Cross multiply
    276,139.13x = 405,141.75 × 405,141.75
  4. Step 4: Simplify right side
    276,139.13x = 164,139,837,593.06
  5. Step 5: Solve for x
    x = 164,139,837,593.06/276,139.13
  6. Step 6: Final answer
    x = 594,409.93

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.