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Finding the Third Proportional to 321,858.56 and 486,929.81

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Solution

The third proportional to 321,858.56 and 486,929.81 is: 736,660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,858.56 : 486,929.81 = 486,929.81 : x
  2. Step 2: Convert to fraction form
    321,858.56/486,929.81 = 486,929.81/x
  3. Step 3: Cross multiply
    321,858.56x = 486,929.81 × 486,929.81
  4. Step 4: Simplify right side
    321,858.56x = 237,100,642,301.29
  5. Step 5: Solve for x
    x = 237,100,642,301.29/321,858.56
  6. Step 6: Final answer
    x = 736,660.97

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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.