Home / 259,708.69-389,585.24-91,214.35

Finding the Fourth Proportional to 259,708.69, 389,585.24 and 91,214.35

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Solution

The fourth proportional to 259,708.69, 389,585.24 and 91,214.35 is: 136,829.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,708.69 : 389,585.24 = 91,214.35 : x
  2. Step 2: Convert to fraction form
    259,708.69/389,585.24 = 91,214.35/x
  3. Step 3: Cross multiply
    259,708.69x = 389,585.24 × 91,214.35
  4. Step 4: Simplify right side
    259,708.69x = 35,535,763,348.21
  5. Step 5: Solve for x
    x = 35,535,763,348.21/259,708.69
  6. Step 6: Final answer
    x = 136,829.32

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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.