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Finding the Fourth Proportional to 613,556.33, 920,376.54 and 208,583.73

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Solution

The fourth proportional to 613,556.33, 920,376.54 and 208,583.73 is: 312,889.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,556.33 : 920,376.54 = 208,583.73 : x
  2. Step 2: Convert to fraction form
    613,556.33/920,376.54 = 208,583.73/x
  3. Step 3: Cross multiply
    613,556.33x = 920,376.54 × 208,583.73
  4. Step 4: Simplify right side
    613,556.33x = 191,975,571,717.69
  5. Step 5: Solve for x
    x = 191,975,571,717.69/613,556.33
  6. Step 6: Final answer
    x = 312,889.89

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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.