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Finding the Third Proportional to 142,039 and 310,806

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Solution

The third proportional to 142,039 and 310,806 is: 680,097.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,039 : 310,806 = 310,806 : x
  2. Step 2: Convert to fraction form
    142,039/310,806 = 310,806/x
  3. Step 3: Cross multiply
    142,039x = 310,806 × 310,806
  4. Step 4: Simplify right side
    142,039x = 96,600,369,636
  5. Step 5: Solve for x
    x = 96,600,369,636/142,039
  6. Step 6: Final answer
    x = 680,097.51

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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.