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Finding the Fourth Proportional to 694,340.80, 1,041,568.80 and 221,012.80

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Solution

The fourth proportional to 694,340.80, 1,041,568.80 and 221,012.80 is: 331,537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,340.80 : 1,041,568.80 = 221,012.80 : x
  2. Step 2: Convert to fraction form
    694,340.80/1,041,568.80 = 221,012.80/x
  3. Step 3: Cross multiply
    694,340.80x = 1,041,568.80 × 221,012.80
  4. Step 4: Simplify right side
    694,340.80x = 230,200,036,880.64
  5. Step 5: Solve for x
    x = 230,200,036,880.64/694,340.80
  6. Step 6: Final answer
    x = 331,537.53

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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.