Home / 279,845.78-386,196.20-158,984.87

Finding the Fourth Proportional to 279,845.78, 386,196.20 and 158,984.87

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Solution

The fourth proportional to 279,845.78, 386,196.20 and 158,984.87 is: 219,404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,845.78 : 386,196.20 = 158,984.87 : x
  2. Step 2: Convert to fraction form
    279,845.78/386,196.20 = 158,984.87/x
  3. Step 3: Cross multiply
    279,845.78x = 386,196.20 × 158,984.87
  4. Step 4: Simplify right side
    279,845.78x = 61,399,349,925.59
  5. Step 5: Solve for x
    x = 61,399,349,925.59/279,845.78
  6. Step 6: Final answer
    x = 219,404.24

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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.