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Finding the Fourth Proportional to 413,529.10, 620,380.05 and 133,074.70

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Solution

The fourth proportional to 413,529.10, 620,380.05 and 133,074.70 is: 199,639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,529.10 : 620,380.05 = 133,074.70 : x
  2. Step 2: Convert to fraction form
    413,529.10/620,380.05 = 133,074.70/x
  3. Step 3: Cross multiply
    413,529.10x = 620,380.05 × 133,074.70
  4. Step 4: Simplify right side
    413,529.10x = 82,556,889,039.74
  5. Step 5: Solve for x
    x = 82,556,889,039.74/413,529.10
  6. Step 6: Final answer
    x = 199,639.85

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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.