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Finding the Third Proportional to 158,990 and 336,385

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Solution

The third proportional to 158,990 and 336,385 is: 711,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,990 : 336,385 = 336,385 : x
  2. Step 2: Convert to fraction form
    158,990/336,385 = 336,385/x
  3. Step 3: Cross multiply
    158,990x = 336,385 × 336,385
  4. Step 4: Simplify right side
    158,990x = 113,154,868,225
  5. Step 5: Solve for x
    x = 113,154,868,225/158,990
  6. Step 6: Final answer
    x = 711,710.60

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.