Home / 281,238.96-421,627.28-131,405.12

Finding the Fourth Proportional to 281,238.96, 421,627.28 and 131,405.12

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Solution

The fourth proportional to 281,238.96, 421,627.28 and 131,405.12 is: 196,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,238.96 : 421,627.28 = 131,405.12 : x
  2. Step 2: Convert to fraction form
    281,238.96/421,627.28 = 131,405.12/x
  3. Step 3: Cross multiply
    281,238.96x = 421,627.28 × 131,405.12
  4. Step 4: Simplify right side
    281,238.96x = 55,403,983,323.67
  5. Step 5: Solve for x
    x = 55,403,983,323.67/281,238.96
  6. Step 6: Final answer
    x = 196,999.67

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1.5x scale

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.