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Finding the Fourth Proportional to 391,467.33, 540,262.98 and 219,414.60

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Solution

The fourth proportional to 391,467.33, 540,262.98 and 219,414.60 is: 302,813.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,467.33 : 540,262.98 = 219,414.60 : x
  2. Step 2: Convert to fraction form
    391,467.33/540,262.98 = 219,414.60/x
  3. Step 3: Cross multiply
    391,467.33x = 540,262.98 × 219,414.60
  4. Step 4: Simplify right side
    391,467.33x = 118,541,585,651.51
  5. Step 5: Solve for x
    x = 118,541,585,651.51/391,467.33
  6. Step 6: Final answer
    x = 302,813.48

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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.