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Finding the Third Proportional to 218,590 and 347,581

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Solution

The third proportional to 218,590 and 347,581 is: 552,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,590 : 347,581 = 347,581 : x
  2. Step 2: Convert to fraction form
    218,590/347,581 = 347,581/x
  3. Step 3: Cross multiply
    218,590x = 347,581 × 347,581
  4. Step 4: Simplify right side
    218,590x = 120,812,551,561
  5. Step 5: Solve for x
    x = 120,812,551,561/218,590
  6. Step 6: Final answer
    x = 552,690.20

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.