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Finding the Fourth Proportional to 255,866.62, 383,610.38 and 122,620

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Solution

The fourth proportional to 255,866.62, 383,610.38 and 122,620 is: 183,839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,866.62 : 383,610.38 = 122,620 : x
  2. Step 2: Convert to fraction form
    255,866.62/383,610.38 = 122,620/x
  3. Step 3: Cross multiply
    255,866.62x = 383,610.38 × 122,620
  4. Step 4: Simplify right side
    255,866.62x = 47,038,304,795.60
  5. Step 5: Solve for x
    x = 47,038,304,795.60/255,866.62
  6. Step 6: Final answer
    x = 183,839.16

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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.