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Finding the Fourth Proportional to 351,144.87, 484,597.05 and 215,186.37

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Solution

The fourth proportional to 351,144.87, 484,597.05 and 215,186.37 is: 296,967.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,144.87 : 484,597.05 = 215,186.37 : x
  2. Step 2: Convert to fraction form
    351,144.87/484,597.05 = 215,186.37/x
  3. Step 3: Cross multiply
    351,144.87x = 484,597.05 × 215,186.37
  4. Step 4: Simplify right side
    351,144.87x = 104,278,682,019.51
  5. Step 5: Solve for x
    x = 104,278,682,019.51/351,144.87
  6. Step 6: Final answer
    x = 296,967.69

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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.