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Finding the Fourth Proportional to 447,388.74, 617,387.30 and 243,443.70

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Solution

The fourth proportional to 447,388.74, 617,387.30 and 243,443.70 is: 335,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,388.74 : 617,387.30 = 243,443.70 : x
  2. Step 2: Convert to fraction form
    447,388.74/617,387.30 = 243,443.70/x
  3. Step 3: Cross multiply
    447,388.74x = 617,387.30 × 243,443.70
  4. Step 4: Simplify right side
    447,388.74x = 150,299,050,797.09
  5. Step 5: Solve for x
    x = 150,299,050,797.09/447,388.74
  6. Step 6: Final answer
    x = 335,947.32

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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.