Home / 811,329.62-1,217,063.68-212,290.27

Finding the Fourth Proportional to 811,329.62, 1,217,063.68 and 212,290.27

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Solution

The fourth proportional to 811,329.62, 1,217,063.68 and 212,290.27 is: 318,453.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,329.62 : 1,217,063.68 = 212,290.27 : x
  2. Step 2: Convert to fraction form
    811,329.62/1,217,063.68 = 212,290.27/x
  3. Step 3: Cross multiply
    811,329.62x = 1,217,063.68 × 212,290.27
  4. Step 4: Simplify right side
    811,329.62x = 258,370,773,661.01
  5. Step 5: Solve for x
    x = 258,370,773,661.01/811,329.62
  6. Step 6: Final answer
    x = 318,453.52

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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.