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Finding the Fourth Proportional to 259,335.36, 389,216.80 and 200,529.28

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Solution

The fourth proportional to 259,335.36, 389,216.80 and 200,529.28 is: 300,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,335.36 : 389,216.80 = 200,529.28 : x
  2. Step 2: Convert to fraction form
    259,335.36/389,216.80 = 200,529.28/x
  3. Step 3: Cross multiply
    259,335.36x = 389,216.80 × 200,529.28
  4. Step 4: Simplify right side
    259,335.36x = 78,049,364,667.90
  5. Step 5: Solve for x
    x = 78,049,364,667.90/259,335.36
  6. Step 6: Final answer
    x = 300,959.21

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1.5x scale

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.