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Finding the Fourth Proportional to 455,571.77, 683,470.44 and 135,722.21

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Solution

The fourth proportional to 455,571.77, 683,470.44 and 135,722.21 is: 203,616.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,571.77 : 683,470.44 = 135,722.21 : x
  2. Step 2: Convert to fraction form
    455,571.77/683,470.44 = 135,722.21/x
  3. Step 3: Cross multiply
    455,571.77x = 683,470.44 × 135,722.21
  4. Step 4: Simplify right side
    455,571.77x = 92,762,115,169.12
  5. Step 5: Solve for x
    x = 92,762,115,169.12/455,571.77
  6. Step 6: Final answer
    x = 203,616.91

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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.