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Finding the Third Proportional to 186,740 and 289,632

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Solution

The third proportional to 186,740 and 289,632 is: 449,216.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,740 : 289,632 = 289,632 : x
  2. Step 2: Convert to fraction form
    186,740/289,632 = 289,632/x
  3. Step 3: Cross multiply
    186,740x = 289,632 × 289,632
  4. Step 4: Simplify right side
    186,740x = 83,886,695,424
  5. Step 5: Solve for x
    x = 83,886,695,424/186,740
  6. Step 6: Final answer
    x = 449,216.53

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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.