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Finding the Fourth Proportional to 279,808.44, 386,204.46 and 216,049.08

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Solution

The fourth proportional to 279,808.44, 386,204.46 and 216,049.08 is: 298,200.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,808.44 : 386,204.46 = 216,049.08 : x
  2. Step 2: Convert to fraction form
    279,808.44/386,204.46 = 216,049.08/x
  3. Step 3: Cross multiply
    279,808.44x = 386,204.46 × 216,049.08
  4. Step 4: Simplify right side
    279,808.44x = 83,439,118,274.90
  5. Step 5: Solve for x
    x = 83,439,118,274.90/279,808.44
  6. Step 6: Final answer
    x = 298,200.86

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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.