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Finding the Fourth Proportional to 281,318.76, 421,412.76 and 131,352.12

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Solution

The fourth proportional to 281,318.76, 421,412.76 and 131,352.12 is: 196,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,318.76 : 421,412.76 = 131,352.12 : x
  2. Step 2: Convert to fraction form
    281,318.76/421,412.76 = 131,352.12/x
  3. Step 3: Cross multiply
    281,318.76x = 421,412.76 × 131,352.12
  4. Step 4: Simplify right side
    281,318.76x = 55,353,459,421.05
  5. Step 5: Solve for x
    x = 55,353,459,421.05/281,318.76
  6. Step 6: Final answer
    x = 196,764.20

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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.