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Finding the Fourth Proportional to 253,932.39, 350,424.45 and 139,208.95

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Solution

The fourth proportional to 253,932.39, 350,424.45 and 139,208.95 is: 192,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,932.39 : 350,424.45 = 139,208.95 : x
  2. Step 2: Convert to fraction form
    253,932.39/350,424.45 = 139,208.95/x
  3. Step 3: Cross multiply
    253,932.39x = 350,424.45 × 139,208.95
  4. Step 4: Simplify right side
    253,932.39x = 48,782,218,862.77
  5. Step 5: Solve for x
    x = 48,782,218,862.77/253,932.39
  6. Step 6: Final answer
    x = 192,107.12

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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.