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Finding the Fourth Proportional to 395,171.22, 545,336.37 and 216,323.22

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Solution

The fourth proportional to 395,171.22, 545,336.37 and 216,323.22 is: 298,526.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,171.22 : 545,336.37 = 216,323.22 : x
  2. Step 2: Convert to fraction form
    395,171.22/545,336.37 = 216,323.22/x
  3. Step 3: Cross multiply
    395,171.22x = 545,336.37 × 216,323.22
  4. Step 4: Simplify right side
    395,171.22x = 117,968,919,541.51
  5. Step 5: Solve for x
    x = 117,968,919,541.51/395,171.22
  6. Step 6: Final answer
    x = 298,526.09

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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.