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Finding the Fourth Proportional to 354,426.52, 531,037.98 and 213,889.84

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Solution

The fourth proportional to 354,426.52, 531,037.98 and 213,889.84 is: 320,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,426.52 : 531,037.98 = 213,889.84 : x
  2. Step 2: Convert to fraction form
    354,426.52/531,037.98 = 213,889.84/x
  3. Step 3: Cross multiply
    354,426.52x = 531,037.98 × 213,889.84
  4. Step 4: Simplify right side
    354,426.52x = 113,583,628,576.12
  5. Step 5: Solve for x
    x = 113,583,628,576.12/354,426.52
  6. Step 6: Final answer
    x = 320,471.58

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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.