Home / 621,073.52-931,807.20-221,705.72

Finding the Fourth Proportional to 621,073.52, 931,807.20 and 221,705.72

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Solution

The fourth proportional to 621,073.52, 931,807.20 and 221,705.72 is: 332,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,073.52 : 931,807.20 = 221,705.72 : x
  2. Step 2: Convert to fraction form
    621,073.52/931,807.20 = 221,705.72/x
  3. Step 3: Cross multiply
    621,073.52x = 931,807.20 × 221,705.72
  4. Step 4: Simplify right side
    621,073.52x = 206,586,986,177.18
  5. Step 5: Solve for x
    x = 206,586,986,177.18/621,073.52
  6. Step 6: Final answer
    x = 332,628.87

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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.