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Finding the Fourth Proportional to 354,662.42, 530,745.41 and 221,605.34

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Solution

The fourth proportional to 354,662.42, 530,745.41 and 221,605.34 is: 331,628.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,662.42 : 530,745.41 = 221,605.34 : x
  2. Step 2: Convert to fraction form
    354,662.42/530,745.41 = 221,605.34/x
  3. Step 3: Cross multiply
    354,662.42x = 530,745.41 × 221,605.34
  4. Step 4: Simplify right side
    354,662.42x = 117,616,014,936.78
  5. Step 5: Solve for x
    x = 117,616,014,936.78/354,662.42
  6. Step 6: Final answer
    x = 331,628.08

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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.