Home / 221,431.41-305,470.11-130,726.61

Finding the Fourth Proportional to 221,431.41, 305,470.11 and 130,726.61

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Solution

The fourth proportional to 221,431.41, 305,470.11 and 130,726.61 is: 180,340.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,431.41 : 305,470.11 = 130,726.61 : x
  2. Step 2: Convert to fraction form
    221,431.41/305,470.11 = 130,726.61/x
  3. Step 3: Cross multiply
    221,431.41x = 305,470.11 × 130,726.61
  4. Step 4: Simplify right side
    221,431.41x = 39,933,071,936.63
  5. Step 5: Solve for x
    x = 39,933,071,936.63/221,431.41
  6. Step 6: Final answer
    x = 180,340.59

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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.