Home / 427,764.70-641,387.22-214,284.34

Finding the Fourth Proportional to 427,764.70, 641,387.22 and 214,284.34

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Solution

The fourth proportional to 427,764.70, 641,387.22 and 214,284.34 is: 321,296.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,764.70 : 641,387.22 = 214,284.34 : x
  2. Step 2: Convert to fraction form
    427,764.70/641,387.22 = 214,284.34/x
  3. Step 3: Cross multiply
    427,764.70x = 641,387.22 × 214,284.34
  4. Step 4: Simplify right side
    427,764.70x = 137,439,237,122.14
  5. Step 5: Solve for x
    x = 137,439,237,122.14/427,764.70
  6. Step 6: Final answer
    x = 321,296.35

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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.