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Finding the Fourth Proportional to 404,325.71, 606,424.29 and 134,431.40

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Solution

The fourth proportional to 404,325.71, 606,424.29 and 134,431.40 is: 201,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,325.71 : 606,424.29 = 134,431.40 : x
  2. Step 2: Convert to fraction form
    404,325.71/606,424.29 = 134,431.40/x
  3. Step 3: Cross multiply
    404,325.71x = 606,424.29 × 134,431.40
  4. Step 4: Simplify right side
    404,325.71x = 81,522,467,310.65
  5. Step 5: Solve for x
    x = 81,522,467,310.65/404,325.71
  6. Step 6: Final answer
    x = 201,625.73

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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.