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Finding the Third Proportional to 216,156 and 345,314

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Solution

The third proportional to 216,156 and 345,314 is: 551,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,156 : 345,314 = 345,314 : x
  2. Step 2: Convert to fraction form
    216,156/345,314 = 345,314/x
  3. Step 3: Cross multiply
    216,156x = 345,314 × 345,314
  4. Step 4: Simplify right side
    216,156x = 119,241,758,596
  5. Step 5: Solve for x
    x = 119,241,758,596/216,156
  6. Step 6: Final answer
    x = 551,646.77

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.