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Finding the Fourth Proportional to 666,340.26, 999,509.61 and 217,060.41

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Solution

The fourth proportional to 666,340.26, 999,509.61 and 217,060.41 is: 325,590.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,340.26 : 999,509.61 = 217,060.41 : x
  2. Step 2: Convert to fraction form
    666,340.26/999,509.61 = 217,060.41/x
  3. Step 3: Cross multiply
    666,340.26x = 999,509.61 × 217,060.41
  4. Step 4: Simplify right side
    666,340.26x = 216,953,965,745.54
  5. Step 5: Solve for x
    x = 216,953,965,745.54/666,340.26
  6. Step 6: Final answer
    x = 325,590.36

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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.