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Finding the Fourth Proportional to 216,438.37, 324,648.32 and 211,370.00

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Solution

The fourth proportional to 216,438.37, 324,648.32 and 211,370.00 is: 317,045.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,438.37 : 324,648.32 = 211,370.00 : x
  2. Step 2: Convert to fraction form
    216,438.37/324,648.32 = 211,370.00/x
  3. Step 3: Cross multiply
    216,438.37x = 324,648.32 × 211,370.00
  4. Step 4: Simplify right side
    216,438.37x = 68,620,915,951.00
  5. Step 5: Solve for x
    x = 68,620,915,951.00/216,438.37
  6. Step 6: Final answer
    x = 317,045.98

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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.