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Finding the Third Proportional to 129,388 and 282,913

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Solution

The third proportional to 129,388 and 282,913 is: 618,602.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,388 : 282,913 = 282,913 : x
  2. Step 2: Convert to fraction form
    129,388/282,913 = 282,913/x
  3. Step 3: Cross multiply
    129,388x = 282,913 × 282,913
  4. Step 4: Simplify right side
    129,388x = 80,039,765,569
  5. Step 5: Solve for x
    x = 80,039,765,569/129,388
  6. Step 6: Final answer
    x = 618,602.70

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.