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Finding the Fourth Proportional to 253,941.69, 350,431.92 and 139,216.41

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Solution

The fourth proportional to 253,941.69, 350,431.92 and 139,216.41 is: 192,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,941.69 : 350,431.92 = 139,216.41 : x
  2. Step 2: Convert to fraction form
    253,941.69/350,431.92 = 139,216.41/x
  3. Step 3: Cross multiply
    253,941.69x = 350,431.92 × 139,216.41
  4. Step 4: Simplify right side
    253,941.69x = 48,785,873,851.81
  5. Step 5: Solve for x
    x = 48,785,873,851.81/253,941.69
  6. Step 6: Final answer
    x = 192,114.47

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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.