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Finding the Third Proportional to 156,218 and 336,169

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Solution

The third proportional to 156,218 and 336,169 is: 723,409.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,218 : 336,169 = 336,169 : x
  2. Step 2: Convert to fraction form
    156,218/336,169 = 336,169/x
  3. Step 3: Cross multiply
    156,218x = 336,169 × 336,169
  4. Step 4: Simplify right side
    156,218x = 113,009,596,561
  5. Step 5: Solve for x
    x = 113,009,596,561/156,218
  6. Step 6: Final answer
    x = 723,409.57

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.