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Finding the Fourth Proportional to 379,485.41, 523,701.92 and 207,399.60

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Solution

The fourth proportional to 379,485.41, 523,701.92 and 207,399.60 is: 286,218.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,485.41 : 523,701.92 = 207,399.60 : x
  2. Step 2: Convert to fraction form
    379,485.41/523,701.92 = 207,399.60/x
  3. Step 3: Cross multiply
    379,485.41x = 523,701.92 × 207,399.60
  4. Step 4: Simplify right side
    379,485.41x = 108,615,568,727.23
  5. Step 5: Solve for x
    x = 108,615,568,727.23/379,485.41
  6. Step 6: Final answer
    x = 286,218.04

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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.