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Finding the Fourth Proportional to 369,321.12, 554,375.34 and 355,936.68

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Solution

The fourth proportional to 369,321.12, 554,375.34 and 355,936.68 is: 534,284.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,321.12 : 554,375.34 = 355,936.68 : x
  2. Step 2: Convert to fraction form
    369,321.12/554,375.34 = 355,936.68/x
  3. Step 3: Cross multiply
    369,321.12x = 554,375.34 × 355,936.68
  4. Step 4: Simplify right side
    369,321.12x = 197,322,517,993.47
  5. Step 5: Solve for x
    x = 197,322,517,993.47/369,321.12
  6. Step 6: Final answer
    x = 534,284.41

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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.