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Finding the Fourth Proportional to 253,063.54, 349,213.98 and 139,879

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Solution

The fourth proportional to 253,063.54, 349,213.98 and 139,879 is: 193,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,063.54 : 349,213.98 = 139,879 : x
  2. Step 2: Convert to fraction form
    253,063.54/349,213.98 = 139,879/x
  3. Step 3: Cross multiply
    253,063.54x = 349,213.98 × 139,879
  4. Step 4: Simplify right side
    253,063.54x = 48,847,702,308.42
  5. Step 5: Solve for x
    x = 48,847,702,308.42/253,063.54
  6. Step 6: Final answer
    x = 193,025.44

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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.