Home / 320,971.92-442,940.46-185,004.78

Finding the Fourth Proportional to 320,971.92, 442,940.46 and 185,004.78

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Solution

The fourth proportional to 320,971.92, 442,940.46 and 185,004.78 is: 255,306.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,971.92 : 442,940.46 = 185,004.78 : x
  2. Step 2: Convert to fraction form
    320,971.92/442,940.46 = 185,004.78/x
  3. Step 3: Cross multiply
    320,971.92x = 442,940.46 × 185,004.78
  4. Step 4: Simplify right side
    320,971.92x = 81,946,102,355.40
  5. Step 5: Solve for x
    x = 81,946,102,355.40/320,971.92
  6. Step 6: Final answer
    x = 255,306.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.