Home / 209,685.60-313,789.68-171,790.56

Finding the Fourth Proportional to 209,685.60, 313,789.68 and 171,790.56

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Solution

The fourth proportional to 209,685.60, 313,789.68 and 171,790.56 is: 257,080.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,685.60 : 313,789.68 = 171,790.56 : x
  2. Step 2: Convert to fraction form
    209,685.60/313,789.68 = 171,790.56/x
  3. Step 3: Cross multiply
    209,685.60x = 313,789.68 × 171,790.56
  4. Step 4: Simplify right side
    209,685.60x = 53,906,104,849.42
  5. Step 5: Solve for x
    x = 53,906,104,849.42/209,685.60
  6. Step 6: Final answer
    x = 257,080.62

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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.