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Finding the Third Proportional to 187,767 and 288,211

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Solution

The third proportional to 187,767 and 288,211 is: 442,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,767 : 288,211 = 288,211 : x
  2. Step 2: Convert to fraction form
    187,767/288,211 = 288,211/x
  3. Step 3: Cross multiply
    187,767x = 288,211 × 288,211
  4. Step 4: Simplify right side
    187,767x = 83,065,580,521
  5. Step 5: Solve for x
    x = 83,065,580,521/187,767
  6. Step 6: Final answer
    x = 442,386.47

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.