Home / 405,217.05-559,201.25-221,459.37

Finding the Fourth Proportional to 405,217.05, 559,201.25 and 221,459.37

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Solution

The fourth proportional to 405,217.05, 559,201.25 and 221,459.37 is: 305,614.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,217.05 : 559,201.25 = 221,459.37 : x
  2. Step 2: Convert to fraction form
    405,217.05/559,201.25 = 221,459.37/x
  3. Step 3: Cross multiply
    405,217.05x = 559,201.25 × 221,459.37
  4. Step 4: Simplify right side
    405,217.05x = 123,840,354,984.86
  5. Step 5: Solve for x
    x = 123,840,354,984.86/405,217.05
  6. Step 6: Final answer
    x = 305,614.87

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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.