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Finding the Fourth Proportional to 455,550.28, 683,390.76 and 140,033.68

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Solution

The fourth proportional to 455,550.28, 683,390.76 and 140,033.68 is: 210,070.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,550.28 : 683,390.76 = 140,033.68 : x
  2. Step 2: Convert to fraction form
    455,550.28/683,390.76 = 140,033.68/x
  3. Step 3: Cross multiply
    455,550.28x = 683,390.76 × 140,033.68
  4. Step 4: Simplify right side
    455,550.28x = 95,697,723,000.80
  5. Step 5: Solve for x
    x = 95,697,723,000.80/455,550.28
  6. Step 6: Final answer
    x = 210,070.61

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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.