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Finding the Fourth Proportional to 259,274.52, 388,927.17 and 72,286.02

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Solution

The fourth proportional to 259,274.52, 388,927.17 and 72,286.02 is: 108,433.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,274.52 : 388,927.17 = 72,286.02 : x
  2. Step 2: Convert to fraction form
    259,274.52/388,927.17 = 72,286.02/x
  3. Step 3: Cross multiply
    259,274.52x = 388,927.17 × 72,286.02
  4. Step 4: Simplify right side
    259,274.52x = 28,113,997,189.16
  5. Step 5: Solve for x
    x = 28,113,997,189.16/259,274.52
  6. Step 6: Final answer
    x = 108,433.32

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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.