Home / 259,768.81-389,308.75-133,403.95

Finding the Fourth Proportional to 259,768.81, 389,308.75 and 133,403.95

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Solution

The fourth proportional to 259,768.81, 389,308.75 and 133,403.95 is: 199,929.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,768.81 : 389,308.75 = 133,403.95 : x
  2. Step 2: Convert to fraction form
    259,768.81/389,308.75 = 133,403.95/x
  3. Step 3: Cross multiply
    259,768.81x = 389,308.75 × 133,403.95
  4. Step 4: Simplify right side
    259,768.81x = 51,935,325,019.56
  5. Step 5: Solve for x
    x = 51,935,325,019.56/259,768.81
  6. Step 6: Final answer
    x = 199,929.03

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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.