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Finding the Fourth Proportional to 694,448.80, 1,041,730.80 and 221,120.80

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Solution

The fourth proportional to 694,448.80, 1,041,730.80 and 221,120.80 is: 331,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,448.80 : 1,041,730.80 = 221,120.80 : x
  2. Step 2: Convert to fraction form
    694,448.80/1,041,730.80 = 221,120.80/x
  3. Step 3: Cross multiply
    694,448.80x = 1,041,730.80 × 221,120.80
  4. Step 4: Simplify right side
    694,448.80x = 230,348,347,880.64
  5. Step 5: Solve for x
    x = 230,348,347,880.64/694,448.80
  6. Step 6: Final answer
    x = 331,699.54

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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.