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Finding the Third Proportional to 142,302.75 and 214,389

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Solution

The third proportional to 142,302.75 and 214,389 is: 322,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,302.75 : 214,389 = 214,389 : x
  2. Step 2: Convert to fraction form
    142,302.75/214,389 = 214,389/x
  3. Step 3: Cross multiply
    142,302.75x = 214,389 × 214,389
  4. Step 4: Simplify right side
    142,302.75x = 45,962,643,321
  5. Step 5: Solve for x
    x = 45,962,643,321/142,302.75
  6. Step 6: Final answer
    x = 322,991.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.