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Finding the Fourth Proportional to 217,803.68, 326,498.16 and 69,956

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Solution

The fourth proportional to 217,803.68, 326,498.16 and 69,956 is: 104,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,803.68 : 326,498.16 = 69,956 : x
  2. Step 2: Convert to fraction form
    217,803.68/326,498.16 = 69,956/x
  3. Step 3: Cross multiply
    217,803.68x = 326,498.16 × 69,956
  4. Step 4: Simplify right side
    217,803.68x = 22,840,505,280.96
  5. Step 5: Solve for x
    x = 22,840,505,280.96/217,803.68
  6. Step 6: Final answer
    x = 104,867.40

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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.