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Finding the Fourth Proportional to 448,818.80, 672,716.28 and 280,416.56

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Solution

The fourth proportional to 448,818.80, 672,716.28 and 280,416.56 is: 420,305.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,818.80 : 672,716.28 = 280,416.56 : x
  2. Step 2: Convert to fraction form
    448,818.80/672,716.28 = 280,416.56/x
  3. Step 3: Cross multiply
    448,818.80x = 672,716.28 × 280,416.56
  4. Step 4: Simplify right side
    448,818.80x = 188,640,785,093.60
  5. Step 5: Solve for x
    x = 188,640,785,093.60/448,818.80
  6. Step 6: Final answer
    x = 420,305.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.