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Finding the Fourth Proportional to 404,321.43, 606,417.84 and 134,427.14

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Solution

The fourth proportional to 404,321.43, 606,417.84 and 134,427.14 is: 201,619.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,321.43 : 606,417.84 = 134,427.14 : x
  2. Step 2: Convert to fraction form
    404,321.43/606,417.84 = 134,427.14/x
  3. Step 3: Cross multiply
    404,321.43x = 606,417.84 × 134,427.14
  4. Step 4: Simplify right side
    404,321.43x = 81,519,012,844.09
  5. Step 5: Solve for x
    x = 81,519,012,844.09/404,321.43
  6. Step 6: Final answer
    x = 201,619.32

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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.