Home / 317,890.24-438,434.77-209,106.29

Finding the Fourth Proportional to 317,890.24, 438,434.77 and 209,106.29

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Solution

The fourth proportional to 317,890.24, 438,434.77 and 209,106.29 is: 288,399.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,890.24 : 438,434.77 = 209,106.29 : x
  2. Step 2: Convert to fraction form
    317,890.24/438,434.77 = 209,106.29/x
  3. Step 3: Cross multiply
    317,890.24x = 438,434.77 × 209,106.29
  4. Step 4: Simplify right side
    317,890.24x = 91,679,468,161.70
  5. Step 5: Solve for x
    x = 91,679,468,161.70/317,890.24
  6. Step 6: Final answer
    x = 288,399.76

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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.