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Finding the Fourth Proportional to 447,389.89, 617,405.42 and 243,441.86

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Solution

The fourth proportional to 447,389.89, 617,405.42 and 243,441.86 is: 335,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,389.89 : 617,405.42 = 243,441.86 : x
  2. Step 2: Convert to fraction form
    447,389.89/617,405.42 = 243,441.86/x
  3. Step 3: Cross multiply
    447,389.89x = 617,405.42 × 243,441.86
  4. Step 4: Simplify right side
    447,389.89x = 150,302,321,340.46
  5. Step 5: Solve for x
    x = 150,302,321,340.46/447,389.89
  6. Step 6: Final answer
    x = 335,953.77

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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.