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Finding the Fourth Proportional to 395,778.88, 593,674.80 and 115,311.52

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Solution

The fourth proportional to 395,778.88, 593,674.80 and 115,311.52 is: 172,969.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,778.88 : 593,674.80 = 115,311.52 : x
  2. Step 2: Convert to fraction form
    395,778.88/593,674.80 = 115,311.52/x
  3. Step 3: Cross multiply
    395,778.88x = 593,674.80 × 115,311.52
  4. Step 4: Simplify right side
    395,778.88x = 68,457,543,573.70
  5. Step 5: Solve for x
    x = 68,457,543,573.70/395,778.88
  6. Step 6: Final answer
    x = 172,969.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.