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Finding the Fourth Proportional to 400,647.26, 552,937.19 and 255,458.21

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Solution

The fourth proportional to 400,647.26, 552,937.19 and 255,458.21 is: 352,560.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,647.26 : 552,937.19 = 255,458.21 : x
  2. Step 2: Convert to fraction form
    400,647.26/552,937.19 = 255,458.21/x
  3. Step 3: Cross multiply
    400,647.26x = 552,937.19 × 255,458.21
  4. Step 4: Simplify right side
    400,647.26x = 141,252,340,757.85
  5. Step 5: Solve for x
    x = 141,252,340,757.85/400,647.26
  6. Step 6: Final answer
    x = 352,560.35

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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.