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Finding the Third Proportional to 202,144 and 316,158

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Solution

The third proportional to 202,144 and 316,158 is: 494,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,144 : 316,158 = 316,158 : x
  2. Step 2: Convert to fraction form
    202,144/316,158 = 316,158/x
  3. Step 3: Cross multiply
    202,144x = 316,158 × 316,158
  4. Step 4: Simplify right side
    202,144x = 99,955,880,964
  5. Step 5: Solve for x
    x = 99,955,880,964/202,144
  6. Step 6: Final answer
    x = 494,478.59

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.