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Finding the Fourth Proportional to 257,967.75, 356,028.32 and 155,993.95

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Solution

The fourth proportional to 257,967.75, 356,028.32 and 155,993.95 is: 215,291.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,967.75 : 356,028.32 = 155,993.95 : x
  2. Step 2: Convert to fraction form
    257,967.75/356,028.32 = 155,993.95/x
  3. Step 3: Cross multiply
    257,967.75x = 356,028.32 × 155,993.95
  4. Step 4: Simplify right side
    257,967.75x = 55,538,263,448.58
  5. Step 5: Solve for x
    x = 55,538,263,448.58/257,967.75
  6. Step 6: Final answer
    x = 215,291.50

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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.