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Finding the Fourth Proportional to 395,019.27, 545,122.70 and 213,727.22

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Solution

The fourth proportional to 395,019.27, 545,122.70 and 213,727.22 is: 294,941.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,019.27 : 545,122.70 = 213,727.22 : x
  2. Step 2: Convert to fraction form
    395,019.27/545,122.70 = 213,727.22/x
  3. Step 3: Cross multiply
    395,019.27x = 545,122.70 × 213,727.22
  4. Step 4: Simplify right side
    395,019.27x = 116,507,555,435.64
  5. Step 5: Solve for x
    x = 116,507,555,435.64/395,019.27
  6. Step 6: Final answer
    x = 294,941.45

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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.