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Finding the Fourth Proportional to 398,224.80, 598,028.40 and 211,600.80

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Solution

The fourth proportional to 398,224.80, 598,028.40 and 211,600.80 is: 317,768.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,224.80 : 598,028.40 = 211,600.80 : x
  2. Step 2: Convert to fraction form
    398,224.80/598,028.40 = 211,600.80/x
  3. Step 3: Cross multiply
    398,224.80x = 598,028.40 × 211,600.80
  4. Step 4: Simplify right side
    398,224.80x = 126,543,287,862.72
  5. Step 5: Solve for x
    x = 126,543,287,862.72/398,224.80
  6. Step 6: Final answer
    x = 317,768.48

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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.