Home / 481,537.16-664,631.88-320,399

Finding the Fourth Proportional to 481,537.16, 664,631.88 and 320,399

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Solution

The fourth proportional to 481,537.16, 664,631.88 and 320,399 is: 442,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,537.16 : 664,631.88 = 320,399 : x
  2. Step 2: Convert to fraction form
    481,537.16/664,631.88 = 320,399/x
  3. Step 3: Cross multiply
    481,537.16x = 664,631.88 × 320,399
  4. Step 4: Simplify right side
    481,537.16x = 212,947,389,720.12
  5. Step 5: Solve for x
    x = 212,947,389,720.12/481,537.16
  6. Step 6: Final answer
    x = 442,224.21

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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.