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Finding the Third Proportional to 280,383.75 and 616,839.50

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Solution

The third proportional to 280,383.75 and 616,839.50 is: 1,357,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,383.75 : 616,839.50 = 616,839.50 : x
  2. Step 2: Convert to fraction form
    280,383.75/616,839.50 = 616,839.50/x
  3. Step 3: Cross multiply
    280,383.75x = 616,839.50 × 616,839.50
  4. Step 4: Simplify right side
    280,383.75x = 380,490,968,760.25
  5. Step 5: Solve for x
    x = 380,490,968,760.25/280,383.75
  6. Step 6: Final answer
    x = 1,357,036.45

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.