Home / 405,350.11-559,383.27-221,589.47

Finding the Fourth Proportional to 405,350.11, 559,383.27 and 221,589.47

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Solution

The fourth proportional to 405,350.11, 559,383.27 and 221,589.47 is: 305,793.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,350.11 : 559,383.27 = 221,589.47 : x
  2. Step 2: Convert to fraction form
    405,350.11/559,383.27 = 221,589.47/x
  3. Step 3: Cross multiply
    405,350.11x = 559,383.27 × 221,589.47
  4. Step 4: Simplify right side
    405,350.11x = 123,953,442,893.67
  5. Step 5: Solve for x
    x = 123,953,442,893.67/405,350.11
  6. Step 6: Final answer
    x = 305,793.54

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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.