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Finding the Third Proportional to 136,312 and 216,756

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Solution

The third proportional to 136,312 and 216,756 is: 344,673.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,312 : 216,756 = 216,756 : x
  2. Step 2: Convert to fraction form
    136,312/216,756 = 216,756/x
  3. Step 3: Cross multiply
    136,312x = 216,756 × 216,756
  4. Step 4: Simplify right side
    136,312x = 46,983,163,536
  5. Step 5: Solve for x
    x = 46,983,163,536/136,312
  6. Step 6: Final answer
    x = 344,673.72

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.