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Finding the Fourth Proportional to 280,991.34, 387,650.34 and 184,218.39

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Solution

The fourth proportional to 280,991.34, 387,650.34 and 184,218.39 is: 254,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,991.34 : 387,650.34 = 184,218.39 : x
  2. Step 2: Convert to fraction form
    280,991.34/387,650.34 = 184,218.39/x
  3. Step 3: Cross multiply
    280,991.34x = 387,650.34 × 184,218.39
  4. Step 4: Simplify right side
    280,991.34x = 71,412,321,517.75
  5. Step 5: Solve for x
    x = 71,412,321,517.75/280,991.34
  6. Step 6: Final answer
    x = 254,144.21

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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.