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Finding the Fourth Proportional to 268,120.73, 401,568.59 and 127,977.77

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Solution

The fourth proportional to 268,120.73, 401,568.59 and 127,977.77 is: 191,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,120.73 : 401,568.59 = 127,977.77 : x
  2. Step 2: Convert to fraction form
    268,120.73/401,568.59 = 127,977.77/x
  3. Step 3: Cross multiply
    268,120.73x = 401,568.59 × 127,977.77
  4. Step 4: Simplify right side
    268,120.73x = 51,391,850,002.51
  5. Step 5: Solve for x
    x = 51,391,850,002.51/268,120.73
  6. Step 6: Final answer
    x = 191,674.29

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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.