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Finding the Fourth Proportional to 288,673.68, 398,388.36 and 161,354.64

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Solution

The fourth proportional to 288,673.68, 398,388.36 and 161,354.64 is: 222,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,673.68 : 398,388.36 = 161,354.64 : x
  2. Step 2: Convert to fraction form
    288,673.68/398,388.36 = 161,354.64/x
  3. Step 3: Cross multiply
    288,673.68x = 398,388.36 × 161,354.64
  4. Step 4: Simplify right side
    288,673.68x = 64,281,810,407.99
  5. Step 5: Solve for x
    x = 64,281,810,407.99/288,673.68
  6. Step 6: Final answer
    x = 222,679.85

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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.