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Finding the Third Proportional to 136,437.75 and 290,135.25

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Solution

The third proportional to 136,437.75 and 290,135.25 is: 616,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,437.75 : 290,135.25 = 290,135.25 : x
  2. Step 2: Convert to fraction form
    136,437.75/290,135.25 = 290,135.25/x
  3. Step 3: Cross multiply
    136,437.75x = 290,135.25 × 290,135.25
  4. Step 4: Simplify right side
    136,437.75x = 84,178,463,292.56
  5. Step 5: Solve for x
    x = 84,178,463,292.56/136,437.75
  6. Step 6: Final answer
    x = 616,973.41

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.