Home / 621,058.86-931,785.30-221,690.79

Finding the Fourth Proportional to 621,058.86, 931,785.30 and 221,690.79

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Solution

The fourth proportional to 621,058.86, 931,785.30 and 221,690.79 is: 332,606.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,058.86 : 931,785.30 = 221,690.79 : x
  2. Step 2: Convert to fraction form
    621,058.86/931,785.30 = 221,690.79/x
  3. Step 3: Cross multiply
    621,058.86x = 931,785.30 × 221,690.79
  4. Step 4: Simplify right side
    621,058.86x = 206,568,219,267.39
  5. Step 5: Solve for x
    x = 206,568,219,267.39/621,058.86
  6. Step 6: Final answer
    x = 332,606.51

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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.