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Finding the Fourth Proportional to 279,479.43, 386,132.54 and 194,973.75

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Solution

The fourth proportional to 279,479.43, 386,132.54 and 194,973.75 is: 269,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,479.43 : 386,132.54 = 194,973.75 : x
  2. Step 2: Convert to fraction form
    279,479.43/386,132.54 = 194,973.75/x
  3. Step 3: Cross multiply
    279,479.43x = 386,132.54 × 194,973.75
  4. Step 4: Simplify right side
    279,479.43x = 75,285,708,345.96
  5. Step 5: Solve for x
    x = 75,285,708,345.96/279,479.43
  6. Step 6: Final answer
    x = 269,378.35

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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.