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Finding the Third Proportional to 158,728 and 215,572

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Solution

The third proportional to 158,728 and 215,572 is: 292,773.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,728 : 215,572 = 215,572 : x
  2. Step 2: Convert to fraction form
    158,728/215,572 = 215,572/x
  3. Step 3: Cross multiply
    158,728x = 215,572 × 215,572
  4. Step 4: Simplify right side
    158,728x = 46,471,287,184
  5. Step 5: Solve for x
    x = 46,471,287,184/158,728
  6. Step 6: Final answer
    x = 292,773.09

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.