Home / 355,898.37-491,149.38-218,074.90

Finding the Fourth Proportional to 355,898.37, 491,149.38 and 218,074.90

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Solution

The fourth proportional to 355,898.37, 491,149.38 and 218,074.90 is: 300,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,898.37 : 491,149.38 = 218,074.90 : x
  2. Step 2: Convert to fraction form
    355,898.37/491,149.38 = 218,074.90/x
  3. Step 3: Cross multiply
    355,898.37x = 491,149.38 × 218,074.90
  4. Step 4: Simplify right side
    355,898.37x = 107,107,350,700.69
  5. Step 5: Solve for x
    x = 107,107,350,700.69/355,898.37
  6. Step 6: Final answer
    x = 300,949.26

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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.