Home / 221,619.61-305,846.52-135,551.59

Finding the Fourth Proportional to 221,619.61, 305,846.52 and 135,551.59

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Solution

The fourth proportional to 221,619.61, 305,846.52 and 135,551.59 is: 187,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,619.61 : 305,846.52 = 135,551.59 : x
  2. Step 2: Convert to fraction form
    221,619.61/305,846.52 = 135,551.59/x
  3. Step 3: Cross multiply
    221,619.61x = 305,846.52 × 135,551.59
  4. Step 4: Simplify right side
    221,619.61x = 41,457,982,081.97
  5. Step 5: Solve for x
    x = 41,457,982,081.97/221,619.61
  6. Step 6: Final answer
    x = 187,068.20

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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.