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Finding the Fourth Proportional to 395,185.64, 545,305.38 and 225,409.64

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Solution

The fourth proportional to 395,185.64, 545,305.38 and 225,409.64 is: 311,036.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,185.64 : 545,305.38 = 225,409.64 : x
  2. Step 2: Convert to fraction form
    395,185.64/545,305.38 = 225,409.64/x
  3. Step 3: Cross multiply
    395,185.64x = 545,305.38 × 225,409.64
  4. Step 4: Simplify right side
    395,185.64x = 122,917,089,395.86
  5. Step 5: Solve for x
    x = 122,917,089,395.86/395,185.64
  6. Step 6: Final answer
    x = 311,036.33

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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.