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Finding the Fourth Proportional to 421,104.66, 581,152.05 and 237,388.56

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Solution

The fourth proportional to 421,104.66, 581,152.05 and 237,388.56 is: 327,611.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,104.66 : 581,152.05 = 237,388.56 : x
  2. Step 2: Convert to fraction form
    421,104.66/581,152.05 = 237,388.56/x
  3. Step 3: Cross multiply
    421,104.66x = 581,152.05 × 237,388.56
  4. Step 4: Simplify right side
    421,104.66x = 137,958,848,290.55
  5. Step 5: Solve for x
    x = 137,958,848,290.55/421,104.66
  6. Step 6: Final answer
    x = 327,611.78

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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.