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Finding the Fourth Proportional to 275,843.92, 380,664.93 and 154,985.13

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Solution

The fourth proportional to 275,843.92, 380,664.93 and 154,985.13 is: 213,879.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,843.92 : 380,664.93 = 154,985.13 : x
  2. Step 2: Convert to fraction form
    275,843.92/380,664.93 = 154,985.13/x
  3. Step 3: Cross multiply
    275,843.92x = 380,664.93 × 154,985.13
  4. Step 4: Simplify right side
    275,843.92x = 58,997,403,662.49
  5. Step 5: Solve for x
    x = 58,997,403,662.49/275,843.92
  6. Step 6: Final answer
    x = 213,879.66

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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.