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Finding the Fourth Proportional to 305,571.54, 421,687.26 and 169,607.10

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Solution

The fourth proportional to 305,571.54, 421,687.26 and 169,607.10 is: 234,056.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,571.54 : 421,687.26 = 169,607.10 : x
  2. Step 2: Convert to fraction form
    305,571.54/421,687.26 = 169,607.10/x
  3. Step 3: Cross multiply
    305,571.54x = 421,687.26 × 169,607.10
  4. Step 4: Simplify right side
    305,571.54x = 71,521,153,275.55
  5. Step 5: Solve for x
    x = 71,521,153,275.55/305,571.54
  6. Step 6: Final answer
    x = 234,056.98

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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.