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Finding the Fourth Proportional to 447,519.55, 617,582.03 and 243,571.78

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Solution

The fourth proportional to 447,519.55, 617,582.03 and 243,571.78 is: 336,131.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,519.55 : 617,582.03 = 243,571.78 : x
  2. Step 2: Convert to fraction form
    447,519.55/617,582.03 = 243,571.78/x
  3. Step 3: Cross multiply
    447,519.55x = 617,582.03 × 243,571.78
  4. Step 4: Simplify right side
    447,519.55x = 150,425,554,343.11
  5. Step 5: Solve for x
    x = 150,425,554,343.11/447,519.55
  6. Step 6: Final answer
    x = 336,131.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.