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Finding the Fourth Proportional to 447,012.88, 616,878.48 and 243,063.64

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Solution

The fourth proportional to 447,012.88, 616,878.48 and 243,063.64 is: 335,428.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,012.88 : 616,878.48 = 243,063.64 : x
  2. Step 2: Convert to fraction form
    447,012.88/616,878.48 = 243,063.64/x
  3. Step 3: Cross multiply
    447,012.88x = 616,878.48 × 243,063.64
  4. Step 4: Simplify right side
    447,012.88x = 149,940,728,786.47
  5. Step 5: Solve for x
    x = 149,940,728,786.47/447,012.88
  6. Step 6: Final answer
    x = 335,428.21

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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.