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Finding the Third Proportional to 187,028 and 398,487

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Solution

The third proportional to 187,028 and 398,487 is: 849,027.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,028 : 398,487 = 398,487 : x
  2. Step 2: Convert to fraction form
    187,028/398,487 = 398,487/x
  3. Step 3: Cross multiply
    187,028x = 398,487 × 398,487
  4. Step 4: Simplify right side
    187,028x = 158,791,889,169
  5. Step 5: Solve for x
    x = 158,791,889,169/187,028
  6. Step 6: Final answer
    x = 849,027.36

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.