Home / 621,269.12-931,667.20-221,835.52

Finding the Fourth Proportional to 621,269.12, 931,667.20 and 221,835.52

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Solution

The fourth proportional to 621,269.12, 931,667.20 and 221,835.52 is: 332,668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,269.12 : 931,667.20 = 221,835.52 : x
  2. Step 2: Convert to fraction form
    621,269.12/931,667.20 = 221,835.52/x
  3. Step 3: Cross multiply
    621,269.12x = 931,667.20 × 221,835.52
  4. Step 4: Simplify right side
    621,269.12x = 206,676,877,778.94
  5. Step 5: Solve for x
    x = 206,676,877,778.94/621,269.12
  6. Step 6: Final answer
    x = 332,668.84

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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.