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Finding the Fourth Proportional to 281,101.47, 421,790.72 and 131,352.11

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Solution

The fourth proportional to 281,101.47, 421,790.72 and 131,352.11 is: 197,092.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,101.47 : 421,790.72 = 131,352.11 : x
  2. Step 2: Convert to fraction form
    281,101.47/421,790.72 = 131,352.11/x
  3. Step 3: Cross multiply
    281,101.47x = 421,790.72 × 131,352.11
  4. Step 4: Simplify right side
    281,101.47x = 55,403,101,050.42
  5. Step 5: Solve for x
    x = 55,403,101,050.42/281,101.47
  6. Step 6: Final answer
    x = 197,092.89

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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.