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Finding the Fourth Proportional to 439,626.40, 659,658.30 and 173,395.60

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Solution

The fourth proportional to 439,626.40, 659,658.30 and 173,395.60 is: 260,179.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,626.40 : 659,658.30 = 173,395.60 : x
  2. Step 2: Convert to fraction form
    439,626.40/659,658.30 = 173,395.60/x
  3. Step 3: Cross multiply
    439,626.40x = 659,658.30 × 173,395.60
  4. Step 4: Simplify right side
    439,626.40x = 114,381,846,723.48
  5. Step 5: Solve for x
    x = 114,381,846,723.48/439,626.40
  6. Step 6: Final answer
    x = 260,179.66

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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.