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Finding the Fourth Proportional to 240,612.88, 331,969.44 and 139,991.44

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Solution

The fourth proportional to 240,612.88, 331,969.44 and 139,991.44 is: 193,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,612.88 : 331,969.44 = 139,991.44 : x
  2. Step 2: Convert to fraction form
    240,612.88/331,969.44 = 139,991.44/x
  3. Step 3: Cross multiply
    240,612.88x = 331,969.44 × 139,991.44
  4. Step 4: Simplify right side
    240,612.88x = 46,472,879,941.59
  5. Step 5: Solve for x
    x = 46,472,879,941.59/240,612.88
  6. Step 6: Final answer
    x = 193,143.77

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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.