Home / 211,480.57-317,291.91-78,371.56

Finding the Fourth Proportional to 211,480.57, 317,291.91 and 78,371.56

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Solution

The fourth proportional to 211,480.57, 317,291.91 and 78,371.56 is: 117,583.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,480.57 : 317,291.91 = 78,371.56 : x
  2. Step 2: Convert to fraction form
    211,480.57/317,291.91 = 78,371.56/x
  3. Step 3: Cross multiply
    211,480.57x = 317,291.91 × 78,371.56
  4. Step 4: Simplify right side
    211,480.57x = 24,866,661,962.08
  5. Step 5: Solve for x
    x = 24,866,661,962.08/211,480.57
  6. Step 6: Final answer
    x = 117,583.67

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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.