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Finding the Fourth Proportional to 197,817, 272,987.46 and 108,391.08

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Solution

The fourth proportional to 197,817, 272,987.46 and 108,391.08 is: 149,579.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,817 : 272,987.46 = 108,391.08 : x
  2. Step 2: Convert to fraction form
    197,817/272,987.46 = 108,391.08/x
  3. Step 3: Cross multiply
    197,817x = 272,987.46 × 108,391.08
  4. Step 4: Simplify right side
    197,817x = 29,589,405,615.86
  5. Step 5: Solve for x
    x = 29,589,405,615.86/197,817
  6. Step 6: Final answer
    x = 149,579.69

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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.