Home / 379,208.25-523,307.39-209,453.31

Finding the Fourth Proportional to 379,208.25, 523,307.39 and 209,453.31

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Solution

The fourth proportional to 379,208.25, 523,307.39 and 209,453.31 is: 289,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,208.25 : 523,307.39 = 209,453.31 : x
  2. Step 2: Convert to fraction form
    379,208.25/523,307.39 = 209,453.31/x
  3. Step 3: Cross multiply
    379,208.25x = 523,307.39 × 209,453.31
  4. Step 4: Simplify right side
    379,208.25x = 109,608,463,935.69
  5. Step 5: Solve for x
    x = 109,608,463,935.69/379,208.25
  6. Step 6: Final answer
    x = 289,045.57

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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.