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Finding the Fourth Proportional to 279,846.96, 386,197.84 and 158,986.04

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Solution

The fourth proportional to 279,846.96, 386,197.84 and 158,986.04 is: 219,405.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,846.96 : 386,197.84 = 158,986.04 : x
  2. Step 2: Convert to fraction form
    279,846.96/386,197.84 = 158,986.04/x
  3. Step 3: Cross multiply
    279,846.96x = 386,197.84 × 158,986.04
  4. Step 4: Simplify right side
    279,846.96x = 61,400,065,238.15
  5. Step 5: Solve for x
    x = 61,400,065,238.15/279,846.96
  6. Step 6: Final answer
    x = 219,405.87

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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.