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Finding the Third Proportional to 255,939.75 and 550,516.50

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Solution

The third proportional to 255,939.75 and 550,516.50 is: 1,184,139.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,939.75 : 550,516.50 = 550,516.50 : x
  2. Step 2: Convert to fraction form
    255,939.75/550,516.50 = 550,516.50/x
  3. Step 3: Cross multiply
    255,939.75x = 550,516.50 × 550,516.50
  4. Step 4: Simplify right side
    255,939.75x = 303,068,416,772.25
  5. Step 5: Solve for x
    x = 303,068,416,772.25/255,939.75
  6. Step 6: Final answer
    x = 1,184,139.69

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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.