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Finding the Fourth Proportional to 280,757.75, 421,016.74 and 162,510.71

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Solution

The fourth proportional to 280,757.75, 421,016.74 and 162,510.71 is: 243,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,757.75 : 421,016.74 = 162,510.71 : x
  2. Step 2: Convert to fraction form
    280,757.75/421,016.74 = 162,510.71/x
  3. Step 3: Cross multiply
    280,757.75x = 421,016.74 × 162,510.71
  4. Step 4: Simplify right side
    280,757.75x = 68,419,729,339.29
  5. Step 5: Solve for x
    x = 68,419,729,339.29/280,757.75
  6. Step 6: Final answer
    x = 243,696.67

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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.