Home / 397,217.72-548,163.02-215,931.21

Finding the Fourth Proportional to 397,217.72, 548,163.02 and 215,931.21

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Solution

The fourth proportional to 397,217.72, 548,163.02 and 215,931.21 is: 297,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,217.72 : 548,163.02 = 215,931.21 : x
  2. Step 2: Convert to fraction form
    397,217.72/548,163.02 = 215,931.21/x
  3. Step 3: Cross multiply
    397,217.72x = 548,163.02 × 215,931.21
  4. Step 4: Simplify right side
    397,217.72x = 118,365,504,725.68
  5. Step 5: Solve for x
    x = 118,365,504,725.68/397,217.72
  6. Step 6: Final answer
    x = 297,986.47

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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.