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Finding the Third Proportional to 63,312 and 135,408

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Solution

The third proportional to 63,312 and 135,408 is: 289,602.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,312 : 135,408 = 135,408 : x
  2. Step 2: Convert to fraction form
    63,312/135,408 = 135,408/x
  3. Step 3: Cross multiply
    63,312x = 135,408 × 135,408
  4. Step 4: Simplify right side
    63,312x = 18,335,326,464
  5. Step 5: Solve for x
    x = 18,335,326,464/63,312
  6. Step 6: Final answer
    x = 289,602.71

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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.