Home / 279,789.07-386,107.71-152,464.66

Finding the Fourth Proportional to 279,789.07, 386,107.71 and 152,464.66

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Solution

The fourth proportional to 279,789.07, 386,107.71 and 152,464.66 is: 210,400.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,789.07 : 386,107.71 = 152,464.66 : x
  2. Step 2: Convert to fraction form
    279,789.07/386,107.71 = 152,464.66/x
  3. Step 3: Cross multiply
    279,789.07x = 386,107.71 × 152,464.66
  4. Step 4: Simplify right side
    279,789.07x = 58,867,780,728.53
  5. Step 5: Solve for x
    x = 58,867,780,728.53/279,789.07
  6. Step 6: Final answer
    x = 210,400.57

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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.