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Finding the Third Proportional to 158,912 and 330,888

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Solution

The third proportional to 158,912 and 330,888 is: 688,977.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,912 : 330,888 = 330,888 : x
  2. Step 2: Convert to fraction form
    158,912/330,888 = 330,888/x
  3. Step 3: Cross multiply
    158,912x = 330,888 × 330,888
  4. Step 4: Simplify right side
    158,912x = 109,486,868,544
  5. Step 5: Solve for x
    x = 109,486,868,544/158,912
  6. Step 6: Final answer
    x = 688,977.98

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.