Home / 221,253.89-305,325.31-135,212.54

Finding the Fourth Proportional to 221,253.89, 305,325.31 and 135,212.54

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Solution

The fourth proportional to 221,253.89, 305,325.31 and 135,212.54 is: 186,590.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,253.89 : 305,325.31 = 135,212.54 : x
  2. Step 2: Convert to fraction form
    221,253.89/305,325.31 = 135,212.54/x
  3. Step 3: Cross multiply
    221,253.89x = 305,325.31 × 135,212.54
  4. Step 4: Simplify right side
    221,253.89x = 41,283,809,252.01
  5. Step 5: Solve for x
    x = 41,283,809,252.01/221,253.89
  6. Step 6: Final answer
    x = 186,590.21

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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.