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Finding the Third Proportional to 222,178 and 317,492

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Solution

The third proportional to 222,178 and 317,492 is: 453,695.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,178 : 317,492 = 317,492 : x
  2. Step 2: Convert to fraction form
    222,178/317,492 = 317,492/x
  3. Step 3: Cross multiply
    222,178x = 317,492 × 317,492
  4. Step 4: Simplify right side
    222,178x = 100,801,170,064
  5. Step 5: Solve for x
    x = 100,801,170,064/222,178
  6. Step 6: Final answer
    x = 453,695.55

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.