Home / 221,084.32-305,198.80-130,409.76

Finding the Fourth Proportional to 221,084.32, 305,198.80 and 130,409.76

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Solution

The fourth proportional to 221,084.32, 305,198.80 and 130,409.76 is: 180,025.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,084.32 : 305,198.80 = 130,409.76 : x
  2. Step 2: Convert to fraction form
    221,084.32/305,198.80 = 130,409.76/x
  3. Step 3: Cross multiply
    221,084.32x = 305,198.80 × 130,409.76
  4. Step 4: Simplify right side
    221,084.32x = 39,800,902,260.29
  5. Step 5: Solve for x
    x = 39,800,902,260.29/221,084.32
  6. Step 6: Final answer
    x = 180,025.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.