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Finding the Fourth Proportional to 253,021.44, 349,155.68 and 139,837.44

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Solution

The fourth proportional to 253,021.44, 349,155.68 and 139,837.44 is: 192,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,021.44 : 349,155.68 = 139,837.44 : x
  2. Step 2: Convert to fraction form
    253,021.44/349,155.68 = 139,837.44/x
  3. Step 3: Cross multiply
    253,021.44x = 349,155.68 × 139,837.44
  4. Step 4: Simplify right side
    253,021.44x = 48,825,036,452.66
  5. Step 5: Solve for x
    x = 48,825,036,452.66/253,021.44
  6. Step 6: Final answer
    x = 192,967.98

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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.