Home / 205,622.40-308,203.20-87,273.60

Finding the Fourth Proportional to 205,622.40, 308,203.20 and 87,273.60

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Solution

The fourth proportional to 205,622.40, 308,203.20 and 87,273.60 is: 130,812.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,622.40 : 308,203.20 = 87,273.60 : x
  2. Step 2: Convert to fraction form
    205,622.40/308,203.20 = 87,273.60/x
  3. Step 3: Cross multiply
    205,622.40x = 308,203.20 × 87,273.60
  4. Step 4: Simplify right side
    205,622.40x = 26,898,002,795.52
  5. Step 5: Solve for x
    x = 26,898,002,795.52/205,622.40
  6. Step 6: Final answer
    x = 130,812.61

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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.