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Finding the Fourth Proportional to 447,340, 617,329.21 and 243,391.02

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Solution

The fourth proportional to 447,340, 617,329.21 and 243,391.02 is: 335,879.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,340 : 617,329.21 = 243,391.02 : x
  2. Step 2: Convert to fraction form
    447,340/617,329.21 = 243,391.02/x
  3. Step 3: Cross multiply
    447,340x = 617,329.21 × 243,391.02
  4. Step 4: Simplify right side
    447,340x = 150,252,386,097.69
  5. Step 5: Solve for x
    x = 150,252,386,097.69/447,340
  6. Step 6: Final answer
    x = 335,879.61

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1.5x scale

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.