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Finding the Fourth Proportional to 330,847.39, 496,003.76 and 128,338.93

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Solution

The fourth proportional to 330,847.39, 496,003.76 and 128,338.93 is: 192,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,847.39 : 496,003.76 = 128,338.93 : x
  2. Step 2: Convert to fraction form
    330,847.39/496,003.76 = 128,338.93/x
  3. Step 3: Cross multiply
    330,847.39x = 496,003.76 × 128,338.93
  4. Step 4: Simplify right side
    330,847.39x = 63,656,591,834.38
  5. Step 5: Solve for x
    x = 63,656,591,834.38/330,847.39
  6. Step 6: Final answer
    x = 192,404.70

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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.