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Finding the Fourth Proportional to 433,879.20, 650,127.60 and 321,904.80

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Solution

The fourth proportional to 433,879.20, 650,127.60 and 321,904.80 is: 482,344.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,879.20 : 650,127.60 = 321,904.80 : x
  2. Step 2: Convert to fraction form
    433,879.20/650,127.60 = 321,904.80/x
  3. Step 3: Cross multiply
    433,879.20x = 650,127.60 × 321,904.80
  4. Step 4: Simplify right side
    433,879.20x = 209,279,195,052.48
  5. Step 5: Solve for x
    x = 209,279,195,052.48/433,879.20
  6. Step 6: Final answer
    x = 482,344.38

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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.