Home / 405,372.21-559,396.20-221,607.27

Finding the Fourth Proportional to 405,372.21, 559,396.20 and 221,607.27

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Solution

The fourth proportional to 405,372.21, 559,396.20 and 221,607.27 is: 305,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,372.21 : 559,396.20 = 221,607.27 : x
  2. Step 2: Convert to fraction form
    405,372.21/559,396.20 = 221,607.27/x
  3. Step 3: Cross multiply
    405,372.21x = 559,396.20 × 221,607.27
  4. Step 4: Simplify right side
    405,372.21x = 123,966,264,730.37
  5. Step 5: Solve for x
    x = 123,966,264,730.37/405,372.21
  6. Step 6: Final answer
    x = 305,808.49

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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.