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Finding the Fourth Proportional to 279,909.58, 386,261.25 and 159,034.90

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Solution

The fourth proportional to 279,909.58, 386,261.25 and 159,034.90 is: 219,460.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,909.58 : 386,261.25 = 159,034.90 : x
  2. Step 2: Convert to fraction form
    279,909.58/386,261.25 = 159,034.90/x
  3. Step 3: Cross multiply
    279,909.58x = 386,261.25 × 159,034.90
  4. Step 4: Simplify right side
    279,909.58x = 61,429,019,267.63
  5. Step 5: Solve for x
    x = 61,429,019,267.63/279,909.58
  6. Step 6: Final answer
    x = 219,460.22

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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.