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Finding the Fourth Proportional to 288,399.52, 397,989.08 and 167,611.51

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Solution

The fourth proportional to 288,399.52, 397,989.08 and 167,611.51 is: 231,302.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,399.52 : 397,989.08 = 167,611.51 : x
  2. Step 2: Convert to fraction form
    288,399.52/397,989.08 = 167,611.51/x
  3. Step 3: Cross multiply
    288,399.52x = 397,989.08 × 167,611.51
  4. Step 4: Simplify right side
    288,399.52x = 66,707,549,824.25
  5. Step 5: Solve for x
    x = 66,707,549,824.25/288,399.52
  6. Step 6: Final answer
    x = 231,302.57

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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.