Home / 280,929.44-421,456.60-131,088

Finding the Fourth Proportional to 280,929.44, 421,456.60 and 131,088

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Solution

The fourth proportional to 280,929.44, 421,456.60 and 131,088 is: 196,661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,929.44 : 421,456.60 = 131,088 : x
  2. Step 2: Convert to fraction form
    280,929.44/421,456.60 = 131,088/x
  3. Step 3: Cross multiply
    280,929.44x = 421,456.60 × 131,088
  4. Step 4: Simplify right side
    280,929.44x = 55,247,902,780.80
  5. Step 5: Solve for x
    x = 55,247,902,780.80/280,929.44
  6. Step 6: Final answer
    x = 196,661.14

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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.