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Finding the Fourth Proportional to 394,514.80, 591,091.80 and 183,720.40

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Solution

The fourth proportional to 394,514.80, 591,091.80 and 183,720.40 is: 275,263.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,514.80 : 591,091.80 = 183,720.40 : x
  2. Step 2: Convert to fraction form
    394,514.80/591,091.80 = 183,720.40/x
  3. Step 3: Cross multiply
    394,514.80x = 591,091.80 × 183,720.40
  4. Step 4: Simplify right side
    394,514.80x = 108,595,621,932.72
  5. Step 5: Solve for x
    x = 108,595,621,932.72/394,514.80
  6. Step 6: Final answer
    x = 275,263.75

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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.