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Finding the Fourth Proportional to 263,279.90, 363,325.82 and 142,420.82

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Solution

The fourth proportional to 263,279.90, 363,325.82 and 142,420.82 is: 196,540.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,279.90 : 363,325.82 = 142,420.82 : x
  2. Step 2: Convert to fraction form
    263,279.90/363,325.82 = 142,420.82/x
  3. Step 3: Cross multiply
    263,279.90x = 363,325.82 × 142,420.82
  4. Step 4: Simplify right side
    263,279.90x = 51,745,158,682.84
  5. Step 5: Solve for x
    x = 51,745,158,682.84/263,279.90
  6. Step 6: Final answer
    x = 196,540.48

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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.