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Finding the Fourth Proportional to 447,624.80, 617,720.46 and 243,687.05

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Solution

The fourth proportional to 447,624.80, 617,720.46 and 243,687.05 is: 336,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,624.80 : 617,720.46 = 243,687.05 : x
  2. Step 2: Convert to fraction form
    447,624.80/617,720.46 = 243,687.05/x
  3. Step 3: Cross multiply
    447,624.80x = 617,720.46 × 243,687.05
  4. Step 4: Simplify right side
    447,624.80x = 150,530,473,533.44
  5. Step 5: Solve for x
    x = 150,530,473,533.44/447,624.80
  6. Step 6: Final answer
    x = 336,287.17

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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.