Home / 211,511.16-317,257.56-71,269.20

Finding the Fourth Proportional to 211,511.16, 317,257.56 and 71,269.20

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Solution

The fourth proportional to 211,511.16, 317,257.56 and 71,269.20 is: 106,900.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,511.16 : 317,257.56 = 71,269.20 : x
  2. Step 2: Convert to fraction form
    211,511.16/317,257.56 = 71,269.20/x
  3. Step 3: Cross multiply
    211,511.16x = 317,257.56 × 71,269.20
  4. Step 4: Simplify right side
    211,511.16x = 22,610,692,495.15
  5. Step 5: Solve for x
    x = 22,610,692,495.15/211,511.16
  6. Step 6: Final answer
    x = 106,900.71

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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.