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Finding the Fourth Proportional to 215,379.41, 323,117.30 and 65,631.42

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Solution

The fourth proportional to 215,379.41, 323,117.30 and 65,631.42 is: 98,461.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,379.41 : 323,117.30 = 65,631.42 : x
  2. Step 2: Convert to fraction form
    215,379.41/323,117.30 = 65,631.42/x
  3. Step 3: Cross multiply
    215,379.41x = 323,117.30 × 65,631.42
  4. Step 4: Simplify right side
    215,379.41x = 21,206,647,225.57
  5. Step 5: Solve for x
    x = 21,206,647,225.57/215,379.41
  6. Step 6: Final answer
    x = 98,461.81

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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.