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Finding the Fourth Proportional to 447,742.95, 617,879.48 and 243,791.54

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Solution

The fourth proportional to 447,742.95, 617,879.48 and 243,791.54 is: 336,429.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,742.95 : 617,879.48 = 243,791.54 : x
  2. Step 2: Convert to fraction form
    447,742.95/617,879.48 = 243,791.54/x
  3. Step 3: Cross multiply
    447,742.95x = 617,879.48 × 243,791.54
  4. Step 4: Simplify right side
    447,742.95x = 150,633,785,655.24
  5. Step 5: Solve for x
    x = 150,633,785,655.24/447,742.95
  6. Step 6: Final answer
    x = 336,429.16

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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.