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Finding the Fourth Proportional to 279,808.56, 386,124.57 and 152,481.42

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Solution

The fourth proportional to 279,808.56, 386,124.57 and 152,481.42 is: 210,418.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,808.56 : 386,124.57 = 152,481.42 : x
  2. Step 2: Convert to fraction form
    279,808.56/386,124.57 = 152,481.42/x
  3. Step 3: Cross multiply
    279,808.56x = 386,124.57 × 152,481.42
  4. Step 4: Simplify right side
    279,808.56x = 58,876,822,730.49
  5. Step 5: Solve for x
    x = 58,876,822,730.49/279,808.56
  6. Step 6: Final answer
    x = 210,418.23

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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.