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Finding the Fourth Proportional to 259,877.76, 389,831.22 and 72,903.84

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Solution

The fourth proportional to 259,877.76, 389,831.22 and 72,903.84 is: 109,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,877.76 : 389,831.22 = 72,903.84 : x
  2. Step 2: Convert to fraction form
    259,877.76/389,831.22 = 72,903.84/x
  3. Step 3: Cross multiply
    259,877.76x = 389,831.22 × 72,903.84
  4. Step 4: Simplify right side
    259,877.76x = 28,420,192,889.88
  5. Step 5: Solve for x
    x = 28,420,192,889.88/259,877.76
  6. Step 6: Final answer
    x = 109,359.85

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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.