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Finding the Fourth Proportional to 288,992.70, 398,822.13 and 178,635.87

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Solution

The fourth proportional to 288,992.70, 398,822.13 and 178,635.87 is: 246,525.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,992.70 : 398,822.13 = 178,635.87 : x
  2. Step 2: Convert to fraction form
    288,992.70/398,822.13 = 178,635.87/x
  3. Step 3: Cross multiply
    288,992.70x = 398,822.13 × 178,635.87
  4. Step 4: Simplify right side
    288,992.70x = 71,243,938,167.80
  5. Step 5: Solve for x
    x = 71,243,938,167.80/288,992.70
  6. Step 6: Final answer
    x = 246,525.04

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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.