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Finding the Fourth Proportional to 384,512.80, 575,408.40 and 335,135.20

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Solution

The fourth proportional to 384,512.80, 575,408.40 and 335,135.20 is: 501,516.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,512.80 : 575,408.40 = 335,135.20 : x
  2. Step 2: Convert to fraction form
    384,512.80/575,408.40 = 335,135.20/x
  3. Step 3: Cross multiply
    384,512.80x = 575,408.40 × 335,135.20
  4. Step 4: Simplify right side
    384,512.80x = 192,839,609,215.68
  5. Step 5: Solve for x
    x = 192,839,609,215.68/384,512.80
  6. Step 6: Final answer
    x = 501,516.75

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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.