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Finding the Fourth Proportional to 297,331.20, 446,064.90 and 128,879.80

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Solution

The fourth proportional to 297,331.20, 446,064.90 and 128,879.80 is: 193,349.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,331.20 : 446,064.90 = 128,879.80 : x
  2. Step 2: Convert to fraction form
    297,331.20/446,064.90 = 128,879.80/x
  3. Step 3: Cross multiply
    297,331.20x = 446,064.90 × 128,879.80
  4. Step 4: Simplify right side
    297,331.20x = 57,488,755,099.02
  5. Step 5: Solve for x
    x = 57,488,755,099.02/297,331.20
  6. Step 6: Final answer
    x = 193,349.22

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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.