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Finding the Fourth Proportional to 383,872.50, 529,720.02 and 211,792.50

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Solution

The fourth proportional to 383,872.50, 529,720.02 and 211,792.50 is: 292,260.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,872.50 : 529,720.02 = 211,792.50 : x
  2. Step 2: Convert to fraction form
    383,872.50/529,720.02 = 211,792.50/x
  3. Step 3: Cross multiply
    383,872.50x = 529,720.02 × 211,792.50
  4. Step 4: Simplify right side
    383,872.50x = 112,190,727,335.85
  5. Step 5: Solve for x
    x = 112,190,727,335.85/383,872.50
  6. Step 6: Final answer
    x = 292,260.39

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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.