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Finding the Fourth Proportional to 671,355.08, 1,006,792.72 and 221,993

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Solution

The fourth proportional to 671,355.08, 1,006,792.72 and 221,993 is: 332,910.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,355.08 : 1,006,792.72 = 221,993 : x
  2. Step 2: Convert to fraction form
    671,355.08/1,006,792.72 = 221,993/x
  3. Step 3: Cross multiply
    671,355.08x = 1,006,792.72 × 221,993
  4. Step 4: Simplify right side
    671,355.08x = 223,500,936,290.96
  5. Step 5: Solve for x
    x = 223,500,936,290.96/671,355.08
  6. Step 6: Final answer
    x = 332,910.17

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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.