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Finding the Fourth Proportional to 455,575.87, 683,404.67 and 118,619.45

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Solution

The fourth proportional to 455,575.87, 683,404.67 and 118,619.45 is: 177,939.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,575.87 : 683,404.67 = 118,619.45 : x
  2. Step 2: Convert to fraction form
    455,575.87/683,404.67 = 118,619.45/x
  3. Step 3: Cross multiply
    455,575.87x = 683,404.67 × 118,619.45
  4. Step 4: Simplify right side
    455,575.87x = 81,065,082,815.21
  5. Step 5: Solve for x
    x = 81,065,082,815.21/455,575.87
  6. Step 6: Final answer
    x = 177,939.81

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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.