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Finding the Fourth Proportional to 399,804.84, 599,503.50 and 133,469.64

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Solution

The fourth proportional to 399,804.84, 599,503.50 and 133,469.64 is: 200,136.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,804.84 : 599,503.50 = 133,469.64 : x
  2. Step 2: Convert to fraction form
    399,804.84/599,503.50 = 133,469.64/x
  3. Step 3: Cross multiply
    399,804.84x = 599,503.50 × 133,469.64
  4. Step 4: Simplify right side
    399,804.84x = 80,015,516,323.74
  5. Step 5: Solve for x
    x = 80,015,516,323.74/399,804.84
  6. Step 6: Final answer
    x = 200,136.44

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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.