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Finding the Fourth Proportional to 288,998.64, 398,791.08 and 180,092.88

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Solution

The fourth proportional to 288,998.64, 398,791.08 and 180,092.88 is: 248,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,998.64 : 398,791.08 = 180,092.88 : x
  2. Step 2: Convert to fraction form
    288,998.64/398,791.08 = 180,092.88/x
  3. Step 3: Cross multiply
    288,998.64x = 398,791.08 × 180,092.88
  4. Step 4: Simplify right side
    288,998.64x = 71,819,434,115.51
  5. Step 5: Solve for x
    x = 71,819,434,115.51/288,998.64
  6. Step 6: Final answer
    x = 248,511.32

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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.