Home / 621,121.12-931,452.48-221,655.04

Finding the Fourth Proportional to 621,121.12, 931,452.48 and 221,655.04

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Solution

The fourth proportional to 621,121.12, 931,452.48 and 221,655.04 is: 332,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,121.12 : 931,452.48 = 221,655.04 : x
  2. Step 2: Convert to fraction form
    621,121.12/931,452.48 = 221,655.04/x
  3. Step 3: Cross multiply
    621,121.12x = 931,452.48 × 221,655.04
  4. Step 4: Simplify right side
    621,121.12x = 206,461,136,712.50
  5. Step 5: Solve for x
    x = 206,461,136,712.50/621,121.12
  6. Step 6: Final answer
    x = 332,400.77

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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.