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Finding the Fourth Proportional to 381,879.60, 572,430.60 and 224,026.80

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Solution

The fourth proportional to 381,879.60, 572,430.60 and 224,026.80 is: 335,812.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,879.60 : 572,430.60 = 224,026.80 : x
  2. Step 2: Convert to fraction form
    381,879.60/572,430.60 = 224,026.80/x
  3. Step 3: Cross multiply
    381,879.60x = 572,430.60 × 224,026.80
  4. Step 4: Simplify right side
    381,879.60x = 128,239,795,540.08
  5. Step 5: Solve for x
    x = 128,239,795,540.08/381,879.60
  6. Step 6: Final answer
    x = 335,812.11

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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.