Home / 405,353.85-559,388.45-221,593.23

Finding the Fourth Proportional to 405,353.85, 559,388.45 and 221,593.23

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Solution

The fourth proportional to 405,353.85, 559,388.45 and 221,593.23 is: 305,798.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,353.85 : 559,388.45 = 221,593.23 : x
  2. Step 2: Convert to fraction form
    405,353.85/559,388.45 = 221,593.23/x
  3. Step 3: Cross multiply
    405,353.85x = 559,388.45 × 221,593.23
  4. Step 4: Simplify right side
    405,353.85x = 123,956,692,352.23
  5. Step 5: Solve for x
    x = 123,956,692,352.23/405,353.85
  6. Step 6: Final answer
    x = 305,798.73

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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.