Home / 259,788.96-389,686.29-91,314.09

Finding the Fourth Proportional to 259,788.96, 389,686.29 and 91,314.09

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Solution

The fourth proportional to 259,788.96, 389,686.29 and 91,314.09 is: 136,972.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,788.96 : 389,686.29 = 91,314.09 : x
  2. Step 2: Convert to fraction form
    259,788.96/389,686.29 = 91,314.09/x
  3. Step 3: Cross multiply
    259,788.96x = 389,686.29 × 91,314.09
  4. Step 4: Simplify right side
    259,788.96x = 35,583,848,956.83
  5. Step 5: Solve for x
    x = 35,583,848,956.83/259,788.96
  6. Step 6: Final answer
    x = 136,972.14

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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.