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Finding the Fourth Proportional to 383,016.67, 528,542.75 and 219,664.74

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Solution

The fourth proportional to 383,016.67, 528,542.75 and 219,664.74 is: 303,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,016.67 : 528,542.75 = 219,664.74 : x
  2. Step 2: Convert to fraction form
    383,016.67/528,542.75 = 219,664.74/x
  3. Step 3: Cross multiply
    383,016.67x = 528,542.75 × 219,664.74
  4. Step 4: Simplify right side
    383,016.67x = 116,102,208,288.83
  5. Step 5: Solve for x
    x = 116,102,208,288.83/383,016.67
  6. Step 6: Final answer
    x = 303,125.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.