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Finding the Fourth Proportional to 305,334.46, 421,350.15 and 171,189.82

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Solution

The fourth proportional to 305,334.46, 421,350.15 and 171,189.82 is: 236,235.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,334.46 : 421,350.15 = 171,189.82 : x
  2. Step 2: Convert to fraction form
    305,334.46/421,350.15 = 171,189.82/x
  3. Step 3: Cross multiply
    305,334.46x = 421,350.15 × 171,189.82
  4. Step 4: Simplify right side
    305,334.46x = 72,130,856,335.47
  5. Step 5: Solve for x
    x = 72,130,856,335.47/305,334.46
  6. Step 6: Final answer
    x = 236,235.56

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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.