Home / 259,631.20-389,331.60-119,317.60

Finding the Fourth Proportional to 259,631.20, 389,331.60 and 119,317.60

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Solution

The fourth proportional to 259,631.20, 389,331.60 and 119,317.60 is: 178,923.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,631.20 : 389,331.60 = 119,317.60 : x
  2. Step 2: Convert to fraction form
    259,631.20/389,331.60 = 119,317.60/x
  3. Step 3: Cross multiply
    259,631.20x = 389,331.60 × 119,317.60
  4. Step 4: Simplify right side
    259,631.20x = 46,454,112,116.16
  5. Step 5: Solve for x
    x = 46,454,112,116.16/259,631.20
  6. Step 6: Final answer
    x = 178,923.46

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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.