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Finding the Fourth Proportional to 366,305.66, 505,005.54 and 313,161.56

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Solution

The fourth proportional to 366,305.66, 505,005.54 and 313,161.56 is: 431,738.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,305.66 : 505,005.54 = 313,161.56 : x
  2. Step 2: Convert to fraction form
    366,305.66/505,005.54 = 313,161.56/x
  3. Step 3: Cross multiply
    366,305.66x = 505,005.54 × 313,161.56
  4. Step 4: Simplify right side
    366,305.66x = 158,148,322,715.04
  5. Step 5: Solve for x
    x = 158,148,322,715.04/366,305.66
  6. Step 6: Final answer
    x = 431,738.68

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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.