Home / 229,919.60-317,286-129,317.60

Finding the Fourth Proportional to 229,919.60, 317,286 and 129,317.60

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Solution

The fourth proportional to 229,919.60, 317,286 and 129,317.60 is: 178,456.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,919.60 : 317,286 = 129,317.60 : x
  2. Step 2: Convert to fraction form
    229,919.60/317,286 = 129,317.60/x
  3. Step 3: Cross multiply
    229,919.60x = 317,286 × 129,317.60
  4. Step 4: Simplify right side
    229,919.60x = 41,030,664,033.60
  5. Step 5: Solve for x
    x = 41,030,664,033.60/229,919.60
  6. Step 6: Final answer
    x = 178,456.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.