Home / 221,585.76-305,784.19-135,538.42

Finding the Fourth Proportional to 221,585.76, 305,784.19 and 135,538.42

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Solution

The fourth proportional to 221,585.76, 305,784.19 and 135,538.42 is: 187,040.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,585.76 : 305,784.19 = 135,538.42 : x
  2. Step 2: Convert to fraction form
    221,585.76/305,784.19 = 135,538.42/x
  3. Step 3: Cross multiply
    221,585.76x = 305,784.19 × 135,538.42
  4. Step 4: Simplify right side
    221,585.76x = 41,445,505,973.58
  5. Step 5: Solve for x
    x = 41,445,505,973.58/221,585.76
  6. Step 6: Final answer
    x = 187,040.48

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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.