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Finding the Third Proportional to 276,258.75 and 389,937

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Solution

The third proportional to 276,258.75 and 389,937 is: 550,392.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,258.75 : 389,937 = 389,937 : x
  2. Step 2: Convert to fraction form
    276,258.75/389,937 = 389,937/x
  3. Step 3: Cross multiply
    276,258.75x = 389,937 × 389,937
  4. Step 4: Simplify right side
    276,258.75x = 152,050,863,969
  5. Step 5: Solve for x
    x = 152,050,863,969/276,258.75
  6. Step 6: Final answer
    x = 550,392.93

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.