Home / 215,409.88-323,090.20-57,650.64

Finding the Fourth Proportional to 215,409.88, 323,090.20 and 57,650.64

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Solution

The fourth proportional to 215,409.88, 323,090.20 and 57,650.64 is: 86,469.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,409.88 : 323,090.20 = 57,650.64 : x
  2. Step 2: Convert to fraction form
    215,409.88/323,090.20 = 57,650.64/x
  3. Step 3: Cross multiply
    215,409.88x = 323,090.20 × 57,650.64
  4. Step 4: Simplify right side
    215,409.88x = 18,626,355,668.20
  5. Step 5: Solve for x
    x = 18,626,355,668.20/215,409.88
  6. Step 6: Final answer
    x = 86,469.37

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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.