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Finding the Third Proportional to 297,889.50 and 638,421

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Solution

The third proportional to 297,889.50 and 638,421 is: 1,368,230.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,889.50 : 638,421 = 638,421 : x
  2. Step 2: Convert to fraction form
    297,889.50/638,421 = 638,421/x
  3. Step 3: Cross multiply
    297,889.50x = 638,421 × 638,421
  4. Step 4: Simplify right side
    297,889.50x = 407,581,373,241
  5. Step 5: Solve for x
    x = 407,581,373,241/297,889.50
  6. Step 6: Final answer
    x = 1,368,230.08

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.