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Finding the Third Proportional to 290,279.50 and 426,883.75

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Solution

The third proportional to 290,279.50 and 426,883.75 is: 627,773.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,279.50 : 426,883.75 = 426,883.75 : x
  2. Step 2: Convert to fraction form
    290,279.50/426,883.75 = 426,883.75/x
  3. Step 3: Cross multiply
    290,279.50x = 426,883.75 × 426,883.75
  4. Step 4: Simplify right side
    290,279.50x = 182,229,736,014.06
  5. Step 5: Solve for x
    x = 182,229,736,014.06/290,279.50
  6. Step 6: Final answer
    x = 627,773.36

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.