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Finding the Fourth Proportional to 315,198.71, 434,972.15 and 179,232.67

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Solution

The fourth proportional to 315,198.71, 434,972.15 and 179,232.67 is: 247,339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,198.71 : 434,972.15 = 179,232.67 : x
  2. Step 2: Convert to fraction form
    315,198.71/434,972.15 = 179,232.67/x
  3. Step 3: Cross multiply
    315,198.71x = 434,972.15 × 179,232.67
  4. Step 4: Simplify right side
    315,198.71x = 77,961,218,197.19
  5. Step 5: Solve for x
    x = 77,961,218,197.19/315,198.71
  6. Step 6: Final answer
    x = 247,339.90

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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.