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Finding the Fourth Proportional to 383,124.62, 528,674.12 and 213,374.54

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Solution

The fourth proportional to 383,124.62, 528,674.12 and 213,374.54 is: 294,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,124.62 : 528,674.12 = 213,374.54 : x
  2. Step 2: Convert to fraction form
    383,124.62/528,674.12 = 213,374.54/x
  3. Step 3: Cross multiply
    383,124.62x = 528,674.12 × 213,374.54
  4. Step 4: Simplify right side
    383,124.62x = 112,805,593,454.66
  5. Step 5: Solve for x
    x = 112,805,593,454.66/383,124.62
  6. Step 6: Final answer
    x = 294,435.78

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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.