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Finding the Fourth Proportional to 421,988.22, 632,544.93 and 263,853.54

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Solution

The fourth proportional to 421,988.22, 632,544.93 and 263,853.54 is: 395,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,988.22 : 632,544.93 = 263,853.54 : x
  2. Step 2: Convert to fraction form
    421,988.22/632,544.93 = 263,853.54/x
  3. Step 3: Cross multiply
    421,988.22x = 632,544.93 × 263,853.54
  4. Step 4: Simplify right side
    421,988.22x = 166,899,218,989.55
  5. Step 5: Solve for x
    x = 166,899,218,989.55/421,988.22
  6. Step 6: Final answer
    x = 395,506.82

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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.