Home / 211,458.56-317,188.38-71,315.60

Finding the Fourth Proportional to 211,458.56, 317,188.38 and 71,315.60

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Solution

The fourth proportional to 211,458.56, 317,188.38 and 71,315.60 is: 106,973.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,458.56 : 317,188.38 = 71,315.60 : x
  2. Step 2: Convert to fraction form
    211,458.56/317,188.38 = 71,315.60/x
  3. Step 3: Cross multiply
    211,458.56x = 317,188.38 × 71,315.60
  4. Step 4: Simplify right side
    211,458.56x = 22,620,479,632.73
  5. Step 5: Solve for x
    x = 22,620,479,632.73/211,458.56
  6. Step 6: Final answer
    x = 106,973.58

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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.