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Finding the Fourth Proportional to 317,399.68, 438,009.92 and 179,584.64

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Solution

The fourth proportional to 317,399.68, 438,009.92 and 179,584.64 is: 247,825.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,399.68 : 438,009.92 = 179,584.64 : x
  2. Step 2: Convert to fraction form
    317,399.68/438,009.92 = 179,584.64/x
  3. Step 3: Cross multiply
    317,399.68x = 438,009.92 × 179,584.64
  4. Step 4: Simplify right side
    317,399.68x = 78,659,853,799.63
  5. Step 5: Solve for x
    x = 78,659,853,799.63/317,399.68
  6. Step 6: Final answer
    x = 247,825.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.