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Finding the Fourth Proportional to 395,944.80, 593,917.20 and 115,490.40

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Solution

The fourth proportional to 395,944.80, 593,917.20 and 115,490.40 is: 173,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,944.80 : 593,917.20 = 115,490.40 : x
  2. Step 2: Convert to fraction form
    395,944.80/593,917.20 = 115,490.40/x
  3. Step 3: Cross multiply
    395,944.80x = 593,917.20 × 115,490.40
  4. Step 4: Simplify right side
    395,944.80x = 68,591,734,994.88
  5. Step 5: Solve for x
    x = 68,591,734,994.88/395,944.80
  6. Step 6: Final answer
    x = 173,235.60

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1.5x scale

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.