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Finding the Fourth Proportional to 666,022.54, 999,031.76 and 239,557.69

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Solution

The fourth proportional to 666,022.54, 999,031.76 and 239,557.69 is: 359,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,022.54 : 999,031.76 = 239,557.69 : x
  2. Step 2: Convert to fraction form
    666,022.54/999,031.76 = 239,557.69/x
  3. Step 3: Cross multiply
    666,022.54x = 999,031.76 × 239,557.69
  4. Step 4: Simplify right side
    666,022.54x = 239,325,740,662.23
  5. Step 5: Solve for x
    x = 239,325,740,662.23/666,022.54
  6. Step 6: Final answer
    x = 359,335.80

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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.