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Finding the Fourth Proportional to 279,863.04, 386,217.12 and 152,544.96

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Solution

The fourth proportional to 279,863.04, 386,217.12 and 152,544.96 is: 210,515.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,863.04 : 386,217.12 = 152,544.96 : x
  2. Step 2: Convert to fraction form
    279,863.04/386,217.12 = 152,544.96/x
  3. Step 3: Cross multiply
    279,863.04x = 386,217.12 × 152,544.96
  4. Step 4: Simplify right side
    279,863.04x = 58,915,475,121.72
  5. Step 5: Solve for x
    x = 58,915,475,121.72/279,863.04
  6. Step 6: Final answer
    x = 210,515.38

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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.