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Finding the Third Proportional to 191,370 and 419,220

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Solution

The third proportional to 191,370 and 419,220 is: 918,354.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,370 : 419,220 = 419,220 : x
  2. Step 2: Convert to fraction form
    191,370/419,220 = 419,220/x
  3. Step 3: Cross multiply
    191,370x = 419,220 × 419,220
  4. Step 4: Simplify right side
    191,370x = 175,745,408,400
  5. Step 5: Solve for x
    x = 175,745,408,400/191,370
  6. Step 6: Final answer
    x = 918,354.02

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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.