Home / 621,104.80-931,657.20-221,758.60

Finding the Fourth Proportional to 621,104.80, 931,657.20 and 221,758.60

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Solution

The fourth proportional to 621,104.80, 931,657.20 and 221,758.60 is: 332,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,104.80 : 931,657.20 = 221,758.60 : x
  2. Step 2: Convert to fraction form
    621,104.80/931,657.20 = 221,758.60/x
  3. Step 3: Cross multiply
    621,104.80x = 931,657.20 × 221,758.60
  4. Step 4: Simplify right side
    621,104.80x = 206,602,996,351.92
  5. Step 5: Solve for x
    x = 206,602,996,351.92/621,104.80
  6. Step 6: Final answer
    x = 332,637.90

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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.