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Finding the Fourth Proportional to 320,879.80, 442,912.62 and 185,004.45

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Solution

The fourth proportional to 320,879.80, 442,912.62 and 185,004.45 is: 255,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,879.80 : 442,912.62 = 185,004.45 : x
  2. Step 2: Convert to fraction form
    320,879.80/442,912.62 = 185,004.45/x
  3. Step 3: Cross multiply
    320,879.80x = 442,912.62 × 185,004.45
  4. Step 4: Simplify right side
    320,879.80x = 81,940,804,736.14
  5. Step 5: Solve for x
    x = 81,940,804,736.14/320,879.80
  6. Step 6: Final answer
    x = 255,362.93

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1.5x scale

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.