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Finding the Third Proportional to 139,871 and 214,637

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Solution

The third proportional to 139,871 and 214,637 is: 329,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,871 : 214,637 = 214,637 : x
  2. Step 2: Convert to fraction form
    139,871/214,637 = 214,637/x
  3. Step 3: Cross multiply
    139,871x = 214,637 × 214,637
  4. Step 4: Simplify right side
    139,871x = 46,069,041,769
  5. Step 5: Solve for x
    x = 46,069,041,769/139,871
  6. Step 6: Final answer
    x = 329,368.07

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.