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Finding the Fourth Proportional to 351,286.58, 484,792.61 and 215,328.08

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Solution

The fourth proportional to 351,286.58, 484,792.61 and 215,328.08 is: 297,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,286.58 : 484,792.61 = 215,328.08 : x
  2. Step 2: Convert to fraction form
    351,286.58/484,792.61 = 215,328.08/x
  3. Step 3: Cross multiply
    351,286.58x = 484,792.61 × 215,328.08
  4. Step 4: Simplify right side
    351,286.58x = 104,389,458,408.89
  5. Step 5: Solve for x
    x = 104,389,458,408.89/351,286.58
  6. Step 6: Final answer
    x = 297,163.24

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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.