Home / 621,014.30-931,521.45-221,668.10

Finding the Fourth Proportional to 621,014.30, 931,521.45 and 221,668.10

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Solution

The fourth proportional to 621,014.30, 931,521.45 and 221,668.10 is: 332,502.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,014.30 : 931,521.45 = 221,668.10 : x
  2. Step 2: Convert to fraction form
    621,014.30/931,521.45 = 221,668.10/x
  3. Step 3: Cross multiply
    621,014.30x = 931,521.45 × 221,668.10
  4. Step 4: Simplify right side
    621,014.30x = 206,488,589,930.75
  5. Step 5: Solve for x
    x = 206,488,589,930.75/621,014.30
  6. Step 6: Final answer
    x = 332,502.15

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Similar ratio
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1.5x scale

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.