Home / 286,256.22-395,015.31-158,931.78

Finding the Fourth Proportional to 286,256.22, 395,015.31 and 158,931.78

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Solution

The fourth proportional to 286,256.22, 395,015.31 and 158,931.78 is: 219,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,256.22 : 395,015.31 = 158,931.78 : x
  2. Step 2: Convert to fraction form
    286,256.22/395,015.31 = 158,931.78/x
  3. Step 3: Cross multiply
    286,256.22x = 395,015.31 × 158,931.78
  4. Step 4: Simplify right side
    286,256.22x = 62,780,486,345.55
  5. Step 5: Solve for x
    x = 62,780,486,345.55/286,256.22
  6. Step 6: Final answer
    x = 219,315.71

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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.