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Finding the Fourth Proportional to 383,504.30, 575,256.45 and 215,542.70

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Solution

The fourth proportional to 383,504.30, 575,256.45 and 215,542.70 is: 323,314.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,504.30 : 575,256.45 = 215,542.70 : x
  2. Step 2: Convert to fraction form
    383,504.30/575,256.45 = 215,542.70/x
  3. Step 3: Cross multiply
    383,504.30x = 575,256.45 × 215,542.70
  4. Step 4: Simplify right side
    383,504.30x = 123,992,328,425.42
  5. Step 5: Solve for x
    x = 123,992,328,425.42/383,504.30
  6. Step 6: Final answer
    x = 323,314.05

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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.