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Finding the Third Proportional to 278,338.50 and 607,221

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Solution

The third proportional to 278,338.50 and 607,221 is: 1,324,708.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,338.50 : 607,221 = 607,221 : x
  2. Step 2: Convert to fraction form
    278,338.50/607,221 = 607,221/x
  3. Step 3: Cross multiply
    278,338.50x = 607,221 × 607,221
  4. Step 4: Simplify right side
    278,338.50x = 368,717,342,841
  5. Step 5: Solve for x
    x = 368,717,342,841/278,338.50
  6. Step 6: Final answer
    x = 1,324,708.38

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.