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Finding the Fourth Proportional to 315,169.30, 434,871.75 and 179,179.78

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Solution

The fourth proportional to 315,169.30, 434,871.75 and 179,179.78 is: 247,232.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,169.30 : 434,871.75 = 179,179.78 : x
  2. Step 2: Convert to fraction form
    315,169.30/434,871.75 = 179,179.78/x
  3. Step 3: Cross multiply
    315,169.30x = 434,871.75 × 179,179.78
  4. Step 4: Simplify right side
    315,169.30x = 77,920,224,493.22
  5. Step 5: Solve for x
    x = 77,920,224,493.22/315,169.30
  6. Step 6: Final answer
    x = 247,232.91

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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.