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Finding the Fourth Proportional to 427,673.88, 641,323.98 and 203,098.68

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Solution

The fourth proportional to 427,673.88, 641,323.98 and 203,098.68 is: 304,559.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,673.88 : 641,323.98 = 203,098.68 : x
  2. Step 2: Convert to fraction form
    427,673.88/641,323.98 = 203,098.68/x
  3. Step 3: Cross multiply
    427,673.88x = 641,323.98 × 203,098.68
  4. Step 4: Simplify right side
    427,673.88x = 130,252,053,790.35
  5. Step 5: Solve for x
    x = 130,252,053,790.35/427,673.88
  6. Step 6: Final answer
    x = 304,559.29

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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.