Home / 313,139.40-469,509.30-206,400.12

Finding the Fourth Proportional to 313,139.40, 469,509.30 and 206,400.12

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Solution

The fourth proportional to 313,139.40, 469,509.30 and 206,400.12 is: 309,468.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,139.40 : 469,509.30 = 206,400.12 : x
  2. Step 2: Convert to fraction form
    313,139.40/469,509.30 = 206,400.12/x
  3. Step 3: Cross multiply
    313,139.40x = 469,509.30 × 206,400.12
  4. Step 4: Simplify right side
    313,139.40x = 96,906,775,861.12
  5. Step 5: Solve for x
    x = 96,906,775,861.12/313,139.40
  6. Step 6: Final answer
    x = 309,468.49

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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.