Home / 259,623.60-389,143.80-109,838.40

Finding the Fourth Proportional to 259,623.60, 389,143.80 and 109,838.40

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Solution

The fourth proportional to 259,623.60, 389,143.80 and 109,838.40 is: 164,634.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,623.60 : 389,143.80 = 109,838.40 : x
  2. Step 2: Convert to fraction form
    259,623.60/389,143.80 = 109,838.40/x
  3. Step 3: Cross multiply
    259,623.60x = 389,143.80 × 109,838.40
  4. Step 4: Simplify right side
    259,623.60x = 42,742,932,361.92
  5. Step 5: Solve for x
    x = 42,742,932,361.92/259,623.60
  6. Step 6: Final answer
    x = 164,634.23

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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.