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Finding the Fourth Proportional to 516,640.68, 774,939.78 and 179,757.72

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Solution

The fourth proportional to 516,640.68, 774,939.78 and 179,757.72 is: 269,629.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,640.68 : 774,939.78 = 179,757.72 : x
  2. Step 2: Convert to fraction form
    516,640.68/774,939.78 = 179,757.72/x
  3. Step 3: Cross multiply
    516,640.68x = 774,939.78 × 179,757.72
  4. Step 4: Simplify right side
    516,640.68x = 139,301,407,990.10
  5. Step 5: Solve for x
    x = 139,301,407,990.10/516,640.68
  6. Step 6: Final answer
    x = 269,629.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.