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Finding the Fourth Proportional to 330,838.80, 496,015.20 and 131,060.40

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Solution

The fourth proportional to 330,838.80, 496,015.20 and 131,060.40 is: 196,494.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,838.80 : 496,015.20 = 131,060.40 : x
  2. Step 2: Convert to fraction form
    330,838.80/496,015.20 = 131,060.40/x
  3. Step 3: Cross multiply
    330,838.80x = 496,015.20 × 131,060.40
  4. Step 4: Simplify right side
    330,838.80x = 65,007,950,518.08
  5. Step 5: Solve for x
    x = 65,007,950,518.08/330,838.80
  6. Step 6: Final answer
    x = 196,494.34

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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.