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Finding the Fourth Proportional to 436,313.46, 654,484.50 and 120,743.94

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Solution

The fourth proportional to 436,313.46, 654,484.50 and 120,743.94 is: 181,119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,313.46 : 654,484.50 = 120,743.94 : x
  2. Step 2: Convert to fraction form
    436,313.46/654,484.50 = 120,743.94/x
  3. Step 3: Cross multiply
    436,313.46x = 654,484.50 × 120,743.94
  4. Step 4: Simplify right side
    436,313.46x = 79,025,037,198.93
  5. Step 5: Solve for x
    x = 79,025,037,198.93/436,313.46
  6. Step 6: Final answer
    x = 181,119.87

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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.