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Finding the Fourth Proportional to 379,481.39, 523,684.82 and 218,333.21

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Solution

The fourth proportional to 379,481.39, 523,684.82 and 218,333.21 is: 301,300.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,481.39 : 523,684.82 = 218,333.21 : x
  2. Step 2: Convert to fraction form
    379,481.39/523,684.82 = 218,333.21/x
  3. Step 3: Cross multiply
    379,481.39x = 523,684.82 × 218,333.21
  4. Step 4: Simplify right side
    379,481.39x = 114,337,784,068.78
  5. Step 5: Solve for x
    x = 114,337,784,068.78/379,481.39
  6. Step 6: Final answer
    x = 301,300.11

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1.5x scale

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.