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Finding the Fourth Proportional to 383,090.04, 528,672.78 and 213,339.96

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Solution

The fourth proportional to 383,090.04, 528,672.78 and 213,339.96 is: 294,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,090.04 : 528,672.78 = 213,339.96 : x
  2. Step 2: Convert to fraction form
    383,090.04/528,672.78 = 213,339.96/x
  3. Step 3: Cross multiply
    383,090.04x = 528,672.78 × 213,339.96
  4. Step 4: Simplify right side
    383,090.04x = 112,787,029,738.29
  5. Step 5: Solve for x
    x = 112,787,029,738.29/383,090.04
  6. Step 6: Final answer
    x = 294,413.89

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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.