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Finding the Fourth Proportional to 305,577, 421,696.80 and 169,606.08

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Solution

The fourth proportional to 305,577, 421,696.80 and 169,606.08 is: 234,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,577 : 421,696.80 = 169,606.08 : x
  2. Step 2: Convert to fraction form
    305,577/421,696.80 = 169,606.08/x
  3. Step 3: Cross multiply
    305,577x = 421,696.80 × 169,606.08
  4. Step 4: Simplify right side
    305,577x = 71,522,341,196.54
  5. Step 5: Solve for x
    x = 71,522,341,196.54/305,577
  6. Step 6: Final answer
    x = 234,056.69

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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.