Home / 212,684.32-319,137.72-137,785.24

Finding the Fourth Proportional to 212,684.32, 319,137.72 and 137,785.24

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Solution

The fourth proportional to 212,684.32, 319,137.72 and 137,785.24 is: 206,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,684.32 : 319,137.72 = 137,785.24 : x
  2. Step 2: Convert to fraction form
    212,684.32/319,137.72 = 137,785.24/x
  3. Step 3: Cross multiply
    212,684.32x = 319,137.72 × 137,785.24
  4. Step 4: Simplify right side
    212,684.32x = 43,972,467,343.25
  5. Step 5: Solve for x
    x = 43,972,467,343.25/212,684.32
  6. Step 6: Final answer
    x = 206,749.93

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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.