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Finding the Fourth Proportional to 620,567.30, 930,960.30 and 221,439.80

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Solution

The fourth proportional to 620,567.30, 930,960.30 and 221,439.80 is: 332,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,567.30 : 930,960.30 = 221,439.80 : x
  2. Step 2: Convert to fraction form
    620,567.30/930,960.30 = 221,439.80/x
  3. Step 3: Cross multiply
    620,567.30x = 930,960.30 × 221,439.80
  4. Step 4: Simplify right side
    620,567.30x = 206,151,662,639.94
  5. Step 5: Solve for x
    x = 206,151,662,639.94/620,567.30
  6. Step 6: Final answer
    x = 332,198.72

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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.