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Finding the Fourth Proportional to 305,546.83, 421,648.28 and 169,572.88

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Solution

The fourth proportional to 305,546.83, 421,648.28 and 169,572.88 is: 234,007.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,546.83 : 421,648.28 = 169,572.88 : x
  2. Step 2: Convert to fraction form
    305,546.83/421,648.28 = 169,572.88/x
  3. Step 3: Cross multiply
    305,546.83x = 421,648.28 × 169,572.88
  4. Step 4: Simplify right side
    305,546.83x = 71,500,113,186.65
  5. Step 5: Solve for x
    x = 71,500,113,186.65/305,546.83
  6. Step 6: Final answer
    x = 234,007.05

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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.