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Finding the Third Proportional to 289,182 and 432,069

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Solution

The third proportional to 289,182 and 432,069 is: 645,557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,182 : 432,069 = 432,069 : x
  2. Step 2: Convert to fraction form
    289,182/432,069 = 432,069/x
  3. Step 3: Cross multiply
    289,182x = 432,069 × 432,069
  4. Step 4: Simplify right side
    289,182x = 186,683,620,761
  5. Step 5: Solve for x
    x = 186,683,620,761/289,182
  6. Step 6: Final answer
    x = 645,557.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.