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Finding the Fourth Proportional to 217,437.56, 326,115.12 and 67,679.72

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Solution

The fourth proportional to 217,437.56, 326,115.12 and 67,679.72 is: 101,506.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,437.56 : 326,115.12 = 67,679.72 : x
  2. Step 2: Convert to fraction form
    217,437.56/326,115.12 = 67,679.72/x
  3. Step 3: Cross multiply
    217,437.56x = 326,115.12 × 67,679.72
  4. Step 4: Simplify right side
    217,437.56x = 22,071,380,009.37
  5. Step 5: Solve for x
    x = 22,071,380,009.37/217,437.56
  6. Step 6: Final answer
    x = 101,506.75

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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.