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Finding the Fourth Proportional to 243,016.20, 364,524.30 and 85,260.60

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Solution

The fourth proportional to 243,016.20, 364,524.30 and 85,260.60 is: 127,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,016.20 : 364,524.30 = 85,260.60 : x
  2. Step 2: Convert to fraction form
    243,016.20/364,524.30 = 85,260.60/x
  3. Step 3: Cross multiply
    243,016.20x = 364,524.30 × 85,260.60
  4. Step 4: Simplify right side
    243,016.20x = 31,079,560,532.58
  5. Step 5: Solve for x
    x = 31,079,560,532.58/243,016.20
  6. Step 6: Final answer
    x = 127,890.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.