Home / 401,785.83-554,427.78-238,414.18

Finding the Fourth Proportional to 401,785.83, 554,427.78 and 238,414.18

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Solution

The fourth proportional to 401,785.83, 554,427.78 and 238,414.18 is: 328,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,785.83 : 554,427.78 = 238,414.18 : x
  2. Step 2: Convert to fraction form
    401,785.83/554,427.78 = 238,414.18/x
  3. Step 3: Cross multiply
    401,785.83x = 554,427.78 × 238,414.18
  4. Step 4: Simplify right side
    401,785.83x = 132,183,444,537.92
  5. Step 5: Solve for x
    x = 132,183,444,537.92/401,785.83
  6. Step 6: Final answer
    x = 328,989.81

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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.