Home / 259,831.64-389,772.24-72,842.60

Finding the Fourth Proportional to 259,831.64, 389,772.24 and 72,842.60

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Solution

The fourth proportional to 259,831.64, 389,772.24 and 72,842.60 is: 109,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,831.64 : 389,772.24 = 72,842.60 : x
  2. Step 2: Convert to fraction form
    259,831.64/389,772.24 = 72,842.60/x
  3. Step 3: Cross multiply
    259,831.64x = 389,772.24 × 72,842.60
  4. Step 4: Simplify right side
    259,831.64x = 28,392,023,369.42
  5. Step 5: Solve for x
    x = 28,392,023,369.42/259,831.64
  6. Step 6: Final answer
    x = 109,270.85

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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.