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Finding the Third Proportional to 90,490 and 210,185

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Solution

The third proportional to 90,490 and 210,185 is: 488,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,490 : 210,185 = 210,185 : x
  2. Step 2: Convert to fraction form
    90,490/210,185 = 210,185/x
  3. Step 3: Cross multiply
    90,490x = 210,185 × 210,185
  4. Step 4: Simplify right side
    90,490x = 44,177,734,225
  5. Step 5: Solve for x
    x = 44,177,734,225/90,490
  6. Step 6: Final answer
    x = 488,205.70

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.