Home / 215,679.09-323,518.64-65,919.81

Finding the Fourth Proportional to 215,679.09, 323,518.64 and 65,919.81

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Solution

The fourth proportional to 215,679.09, 323,518.64 and 65,919.81 is: 98,879.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,679.09 : 323,518.64 = 65,919.81 : x
  2. Step 2: Convert to fraction form
    215,679.09/323,518.64 = 65,919.81/x
  3. Step 3: Cross multiply
    215,679.09x = 323,518.64 × 65,919.81
  4. Step 4: Simplify right side
    215,679.09x = 21,326,286,950.66
  5. Step 5: Solve for x
    x = 21,326,286,950.66/215,679.09
  6. Step 6: Final answer
    x = 98,879.72

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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.