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Finding the Fourth Proportional to 408,085.11, 612,126.87 and 108,566.01

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Solution

The fourth proportional to 408,085.11, 612,126.87 and 108,566.01 is: 162,848.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,085.11 : 612,126.87 = 108,566.01 : x
  2. Step 2: Convert to fraction form
    408,085.11/612,126.87 = 108,566.01/x
  3. Step 3: Cross multiply
    408,085.11x = 612,126.87 × 108,566.01
  4. Step 4: Simplify right side
    408,085.11x = 66,456,171,889.69
  5. Step 5: Solve for x
    x = 66,456,171,889.69/408,085.11
  6. Step 6: Final answer
    x = 162,848.80

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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.