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Finding the Fourth Proportional to 203,930.10, 305,895.15 and 156,636.23

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Solution

The fourth proportional to 203,930.10, 305,895.15 and 156,636.23 is: 234,954.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,930.10 : 305,895.15 = 156,636.23 : x
  2. Step 2: Convert to fraction form
    203,930.10/305,895.15 = 156,636.23/x
  3. Step 3: Cross multiply
    203,930.10x = 305,895.15 × 156,636.23
  4. Step 4: Simplify right side
    203,930.10x = 47,914,263,071.28
  5. Step 5: Solve for x
    x = 47,914,263,071.28/203,930.10
  6. Step 6: Final answer
    x = 234,954.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.