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Finding the Fourth Proportional to 421,950.75, 632,857.90 and 155,836.59

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Solution

The fourth proportional to 421,950.75, 632,857.90 and 155,836.59 is: 233,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,950.75 : 632,857.90 = 155,836.59 : x
  2. Step 2: Convert to fraction form
    421,950.75/632,857.90 = 155,836.59/x
  3. Step 3: Cross multiply
    421,950.75x = 632,857.90 × 155,836.59
  4. Step 4: Simplify right side
    421,950.75x = 98,622,413,147.09
  5. Step 5: Solve for x
    x = 98,622,413,147.09/421,950.75
  6. Step 6: Final answer
    x = 233,729.68

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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.