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Finding the Fourth Proportional to 666,021.54, 999,030.26 and 239,556.69

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Solution

The fourth proportional to 666,021.54, 999,030.26 and 239,556.69 is: 359,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,021.54 : 999,030.26 = 239,556.69 : x
  2. Step 2: Convert to fraction form
    666,021.54/999,030.26 = 239,556.69/x
  3. Step 3: Cross multiply
    666,021.54x = 999,030.26 × 239,556.69
  4. Step 4: Simplify right side
    666,021.54x = 239,324,381,546.83
  5. Step 5: Solve for x
    x = 239,324,381,546.83/666,021.54
  6. Step 6: Final answer
    x = 359,334.30

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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.