Home / 221,013.32-305,034.96-130,391.44

Finding the Fourth Proportional to 221,013.32, 305,034.96 and 130,391.44

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Solution

The fourth proportional to 221,013.32, 305,034.96 and 130,391.44 is: 179,961.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,013.32 : 305,034.96 = 130,391.44 : x
  2. Step 2: Convert to fraction form
    221,013.32/305,034.96 = 130,391.44/x
  3. Step 3: Cross multiply
    221,013.32x = 305,034.96 × 130,391.44
  4. Step 4: Simplify right side
    221,013.32x = 39,773,947,684.74
  5. Step 5: Solve for x
    x = 39,773,947,684.74/221,013.32
  6. Step 6: Final answer
    x = 179,961.77

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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.