Home / 217,521.18-326,268.64-129,335.86

Finding the Fourth Proportional to 217,521.18, 326,268.64 and 129,335.86

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Solution

The fourth proportional to 217,521.18, 326,268.64 and 129,335.86 is: 193,995.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,521.18 : 326,268.64 = 129,335.86 : x
  2. Step 2: Convert to fraction form
    217,521.18/326,268.64 = 129,335.86/x
  3. Step 3: Cross multiply
    217,521.18x = 326,268.64 × 129,335.86
  4. Step 4: Simplify right side
    217,521.18x = 42,198,235,145.43
  5. Step 5: Solve for x
    x = 42,198,235,145.43/217,521.18
  6. Step 6: Final answer
    x = 193,995.98

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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.