Home / 205,222.60-307,542.30-142,820.20

Finding the Fourth Proportional to 205,222.60, 307,542.30 and 142,820.20

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Solution

The fourth proportional to 205,222.60, 307,542.30 and 142,820.20 is: 214,027.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,222.60 : 307,542.30 = 142,820.20 : x
  2. Step 2: Convert to fraction form
    205,222.60/307,542.30 = 142,820.20/x
  3. Step 3: Cross multiply
    205,222.60x = 307,542.30 × 142,820.20
  4. Step 4: Simplify right side
    205,222.60x = 43,923,252,794.46
  5. Step 5: Solve for x
    x = 43,923,252,794.46/205,222.60
  6. Step 6: Final answer
    x = 214,027.37

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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.