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Finding the Fourth Proportional to 351,435.44, 485,015.68 and 200,555.12

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Solution

The fourth proportional to 351,435.44, 485,015.68 and 200,555.12 is: 276,785.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,435.44 : 485,015.68 = 200,555.12 : x
  2. Step 2: Convert to fraction form
    351,435.44/485,015.68 = 200,555.12/x
  3. Step 3: Cross multiply
    351,435.44x = 485,015.68 × 200,555.12
  4. Step 4: Simplify right side
    351,435.44x = 97,272,377,904.28
  5. Step 5: Solve for x
    x = 97,272,377,904.28/351,435.44
  6. Step 6: Final answer
    x = 276,785.91

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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.