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Finding the Third Proportional to 99,537 and 218,490

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Solution

The third proportional to 99,537 and 218,490 is: 479,599.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,537 : 218,490 = 218,490 : x
  2. Step 2: Convert to fraction form
    99,537/218,490 = 218,490/x
  3. Step 3: Cross multiply
    99,537x = 218,490 × 218,490
  4. Step 4: Simplify right side
    99,537x = 47,737,880,100
  5. Step 5: Solve for x
    x = 47,737,880,100/99,537
  6. Step 6: Final answer
    x = 479,599.35

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.