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Finding the Fourth Proportional to 399,797.09, 599,491.88 and 133,461.89

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Solution

The fourth proportional to 399,797.09, 599,491.88 and 133,461.89 is: 200,124.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,797.09 : 599,491.88 = 133,461.89 : x
  2. Step 2: Convert to fraction form
    399,797.09/599,491.88 = 133,461.89/x
  3. Step 3: Cross multiply
    399,797.09x = 599,491.88 × 133,461.89
  4. Step 4: Simplify right side
    399,797.09x = 80,009,318,677.14
  5. Step 5: Solve for x
    x = 80,009,318,677.14/399,797.09
  6. Step 6: Final answer
    x = 200,124.82

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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.