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Finding the Third Proportional to 218,464 and 295,158

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Solution

The third proportional to 218,464 and 295,158 is: 398,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,464 : 295,158 = 295,158 : x
  2. Step 2: Convert to fraction form
    218,464/295,158 = 295,158/x
  3. Step 3: Cross multiply
    218,464x = 295,158 × 295,158
  4. Step 4: Simplify right side
    218,464x = 87,118,244,964
  5. Step 5: Solve for x
    x = 87,118,244,964/218,464
  6. Step 6: Final answer
    x = 398,776.21

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.