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Finding the Third Proportional to 136,018.50 and 211,323

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Solution

The third proportional to 136,018.50 and 211,323 is: 328,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,018.50 : 211,323 = 211,323 : x
  2. Step 2: Convert to fraction form
    136,018.50/211,323 = 211,323/x
  3. Step 3: Cross multiply
    136,018.50x = 211,323 × 211,323
  4. Step 4: Simplify right side
    136,018.50x = 44,657,410,329
  5. Step 5: Solve for x
    x = 44,657,410,329/136,018.50
  6. Step 6: Final answer
    x = 328,318.65

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.