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Finding the Fourth Proportional to 259,254.40, 388,833.60 and 72,227.20

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Solution

The fourth proportional to 259,254.40, 388,833.60 and 72,227.20 is: 108,327.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,254.40 : 388,833.60 = 72,227.20 : x
  2. Step 2: Convert to fraction form
    259,254.40/388,833.60 = 72,227.20/x
  3. Step 3: Cross multiply
    259,254.40x = 388,833.60 × 72,227.20
  4. Step 4: Simplify right side
    259,254.40x = 28,084,362,193.92
  5. Step 5: Solve for x
    x = 28,084,362,193.92/259,254.40
  6. Step 6: Final answer
    x = 108,327.43

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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.