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Finding the Third Proportional to 290,863.50 and 608,077.50

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Solution

The third proportional to 290,863.50 and 608,077.50 is: 1,271,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,863.50 : 608,077.50 = 608,077.50 : x
  2. Step 2: Convert to fraction form
    290,863.50/608,077.50 = 608,077.50/x
  3. Step 3: Cross multiply
    290,863.50x = 608,077.50 × 608,077.50
  4. Step 4: Simplify right side
    290,863.50x = 369,758,246,006.25
  5. Step 5: Solve for x
    x = 369,758,246,006.25/290,863.50
  6. Step 6: Final answer
    x = 1,271,243.20

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.