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Finding the Fourth Proportional to 393,575.94, 543,299.31 and 266,325.39

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Solution

The fourth proportional to 393,575.94, 543,299.31 and 266,325.39 is: 367,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,575.94 : 543,299.31 = 266,325.39 : x
  2. Step 2: Convert to fraction form
    393,575.94/543,299.31 = 266,325.39/x
  3. Step 3: Cross multiply
    393,575.94x = 543,299.31 × 266,325.39
  4. Step 4: Simplify right side
    393,575.94x = 144,694,400,622.48
  5. Step 5: Solve for x
    x = 144,694,400,622.48/393,575.94
  6. Step 6: Final answer
    x = 367,640.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.