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Finding the Fourth Proportional to 447,643.60, 617,761.60 and 243,707.84

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Solution

The fourth proportional to 447,643.60, 617,761.60 and 243,707.84 is: 336,324.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,643.60 : 617,761.60 = 243,707.84 : x
  2. Step 2: Convert to fraction form
    447,643.60/617,761.60 = 243,707.84/x
  3. Step 3: Cross multiply
    447,643.60x = 617,761.60 × 243,707.84
  4. Step 4: Simplify right side
    447,643.60x = 150,553,345,170.94
  5. Step 5: Solve for x
    x = 150,553,345,170.94/447,643.60
  6. Step 6: Final answer
    x = 336,324.13

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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.