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Finding the Third Proportional to 56,315 and 120,649

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Solution

The third proportional to 56,315 and 120,649 is: 258,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,315 : 120,649 = 120,649 : x
  2. Step 2: Convert to fraction form
    56,315/120,649 = 120,649/x
  3. Step 3: Cross multiply
    56,315x = 120,649 × 120,649
  4. Step 4: Simplify right side
    56,315x = 14,556,181,201
  5. Step 5: Solve for x
    x = 14,556,181,201/56,315
  6. Step 6: Final answer
    x = 258,477.87

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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.