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Finding the Fourth Proportional to 620,565.30, 930,957.30 and 221,437.80

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Solution

The fourth proportional to 620,565.30, 930,957.30 and 221,437.80 is: 332,195.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,565.30 : 930,957.30 = 221,437.80 : x
  2. Step 2: Convert to fraction form
    620,565.30/930,957.30 = 221,437.80/x
  3. Step 3: Cross multiply
    620,565.30x = 930,957.30 × 221,437.80
  4. Step 4: Simplify right side
    620,565.30x = 206,149,136,405.94
  5. Step 5: Solve for x
    x = 206,149,136,405.94/620,565.30
  6. Step 6: Final answer
    x = 332,195.72

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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.