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Finding the Fourth Proportional to 268,664.40, 403,871.40 and 190,321.20

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Solution

The fourth proportional to 268,664.40, 403,871.40 and 190,321.20 is: 286,101.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,664.40 : 403,871.40 = 190,321.20 : x
  2. Step 2: Convert to fraction form
    268,664.40/403,871.40 = 190,321.20/x
  3. Step 3: Cross multiply
    268,664.40x = 403,871.40 × 190,321.20
  4. Step 4: Simplify right side
    268,664.40x = 76,865,289,493.68
  5. Step 5: Solve for x
    x = 76,865,289,493.68/268,664.40
  6. Step 6: Final answer
    x = 286,101.51

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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.