Home / 621,120.12-931,450.98-221,654.04

Finding the Fourth Proportional to 621,120.12, 931,450.98 and 221,654.04

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Solution

The fourth proportional to 621,120.12, 931,450.98 and 221,654.04 is: 332,399.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,120.12 : 931,450.98 = 221,654.04 : x
  2. Step 2: Convert to fraction form
    621,120.12/931,450.98 = 221,654.04/x
  3. Step 3: Cross multiply
    621,120.12x = 931,450.98 × 221,654.04
  4. Step 4: Simplify right side
    621,120.12x = 206,459,872,778.96
  5. Step 5: Solve for x
    x = 206,459,872,778.96/621,120.12
  6. Step 6: Final answer
    x = 332,399.27

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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.