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Finding the Fourth Proportional to 305,651.28, 421,800.46 and 169,683.06

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Solution

The fourth proportional to 305,651.28, 421,800.46 and 169,683.06 is: 234,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,651.28 : 421,800.46 = 169,683.06 : x
  2. Step 2: Convert to fraction form
    305,651.28/421,800.46 = 169,683.06/x
  3. Step 3: Cross multiply
    305,651.28x = 421,800.46 × 169,683.06
  4. Step 4: Simplify right side
    305,651.28x = 71,572,392,762.21
  5. Step 5: Solve for x
    x = 71,572,392,762.21/305,651.28
  6. Step 6: Final answer
    x = 234,163.56

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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.