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Finding the Fourth Proportional to 447,028.38, 616,895.82 and 243,079.38

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Solution

The fourth proportional to 447,028.38, 616,895.82 and 243,079.38 is: 335,447.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,028.38 : 616,895.82 = 243,079.38 : x
  2. Step 2: Convert to fraction form
    447,028.38/616,895.82 = 243,079.38/x
  3. Step 3: Cross multiply
    447,028.38x = 616,895.82 × 243,079.38
  4. Step 4: Simplify right side
    447,028.38x = 149,954,653,450.19
  5. Step 5: Solve for x
    x = 149,954,653,450.19/447,028.38
  6. Step 6: Final answer
    x = 335,447.73

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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.