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Finding the Fourth Proportional to 203,873.86, 281,248.30 and 143,478.03

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Solution

The fourth proportional to 203,873.86, 281,248.30 and 143,478.03 is: 197,930.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,873.86 : 281,248.30 = 143,478.03 : x
  2. Step 2: Convert to fraction form
    203,873.86/281,248.30 = 143,478.03/x
  3. Step 3: Cross multiply
    203,873.86x = 281,248.30 × 143,478.03
  4. Step 4: Simplify right side
    203,873.86x = 40,352,953,258.88
  5. Step 5: Solve for x
    x = 40,352,953,258.88/203,873.86
  6. Step 6: Final answer
    x = 197,930.98

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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.