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Finding the Fourth Proportional to 279,895.82, 386,241.62 and 159,020.32

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Solution

The fourth proportional to 279,895.82, 386,241.62 and 159,020.32 is: 219,439.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,895.82 : 386,241.62 = 159,020.32 : x
  2. Step 2: Convert to fraction form
    279,895.82/386,241.62 = 159,020.32/x
  3. Step 3: Cross multiply
    279,895.82x = 386,241.62 × 159,020.32
  4. Step 4: Simplify right side
    279,895.82x = 61,420,266,009.72
  5. Step 5: Solve for x
    x = 61,420,266,009.72/279,895.82
  6. Step 6: Final answer
    x = 219,439.74

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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.