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Finding the Fourth Proportional to 305,433.96, 421,478.78 and 169,467.54

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Solution

The fourth proportional to 305,433.96, 421,478.78 and 169,467.54 is: 233,854.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,433.96 : 421,478.78 = 169,467.54 : x
  2. Step 2: Convert to fraction form
    305,433.96/421,478.78 = 169,467.54/x
  3. Step 3: Cross multiply
    305,433.96x = 421,478.78 × 169,467.54
  4. Step 4: Simplify right side
    305,433.96x = 71,426,972,008.80
  5. Step 5: Solve for x
    x = 71,426,972,008.80/305,433.96
  6. Step 6: Final answer
    x = 233,854.06

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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.