Home / 272,071.39-408,149.33-138,879.58

Finding the Fourth Proportional to 272,071.39, 408,149.33 and 138,879.58

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Solution

The fourth proportional to 272,071.39, 408,149.33 and 138,879.58 is: 208,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,071.39 : 408,149.33 = 138,879.58 : x
  2. Step 2: Convert to fraction form
    272,071.39/408,149.33 = 138,879.58/x
  3. Step 3: Cross multiply
    272,071.39x = 408,149.33 × 138,879.58
  4. Step 4: Simplify right side
    272,071.39x = 56,683,607,527.68
  5. Step 5: Solve for x
    x = 56,683,607,527.68/272,071.39
  6. Step 6: Final answer
    x = 208,340.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.