Home / 259,740.30-389,660.67-99,804.18

Finding the Fourth Proportional to 259,740.30, 389,660.67 and 99,804.18

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Solution

The fourth proportional to 259,740.30, 389,660.67 and 99,804.18 is: 149,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.30 : 389,660.67 = 99,804.18 : x
  2. Step 2: Convert to fraction form
    259,740.30/389,660.67 = 99,804.18/x
  3. Step 3: Cross multiply
    259,740.30x = 389,660.67 × 99,804.18
  4. Step 4: Simplify right side
    259,740.30x = 38,889,763,647.60
  5. Step 5: Solve for x
    x = 38,889,763,647.60/259,740.30
  6. Step 6: Final answer
    x = 149,725.57

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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.