Home / 317,889.24-438,433.39-209,105.29

Finding the Fourth Proportional to 317,889.24, 438,433.39 and 209,105.29

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Solution

The fourth proportional to 317,889.24, 438,433.39 and 209,105.29 is: 288,398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,889.24 : 438,433.39 = 209,105.29 : x
  2. Step 2: Convert to fraction form
    317,889.24/438,433.39 = 209,105.29/x
  3. Step 3: Cross multiply
    317,889.24x = 438,433.39 × 209,105.29
  4. Step 4: Simplify right side
    317,889.24x = 91,678,741,161.63
  5. Step 5: Solve for x
    x = 91,678,741,161.63/317,889.24
  6. Step 6: Final answer
    x = 288,398.38

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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.