Home / 403,811.08-557,221.20-238,213.21

Finding the Fourth Proportional to 403,811.08, 557,221.20 and 238,213.21

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Solution

The fourth proportional to 403,811.08, 557,221.20 and 238,213.21 is: 328,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,811.08 : 557,221.20 = 238,213.21 : x
  2. Step 2: Convert to fraction form
    403,811.08/557,221.20 = 238,213.21/x
  3. Step 3: Cross multiply
    403,811.08x = 557,221.20 × 238,213.21
  4. Step 4: Simplify right side
    403,811.08x = 132,737,450,732.05
  5. Step 5: Solve for x
    x = 132,737,450,732.05/403,811.08
  6. Step 6: Final answer
    x = 328,711.76

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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.