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Finding the Fourth Proportional to 321,043.20, 481,046.40 and 202,502.40

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Solution

The fourth proportional to 321,043.20, 481,046.40 and 202,502.40 is: 303,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,043.20 : 481,046.40 = 202,502.40 : x
  2. Step 2: Convert to fraction form
    321,043.20/481,046.40 = 202,502.40/x
  3. Step 3: Cross multiply
    321,043.20x = 481,046.40 × 202,502.40
  4. Step 4: Simplify right side
    321,043.20x = 97,413,050,511.36
  5. Step 5: Solve for x
    x = 97,413,050,511.36/321,043.20
  6. Step 6: Final answer
    x = 303,426.61

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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.