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Finding the Third Proportional to 131,515 and 287,633

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Solution

The third proportional to 131,515 and 287,633 is: 629,074.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,515 : 287,633 = 287,633 : x
  2. Step 2: Convert to fraction form
    131,515/287,633 = 287,633/x
  3. Step 3: Cross multiply
    131,515x = 287,633 × 287,633
  4. Step 4: Simplify right side
    131,515x = 82,732,742,689
  5. Step 5: Solve for x
    x = 82,732,742,689/131,515
  6. Step 6: Final answer
    x = 629,074.57

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.