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Finding the Fourth Proportional to 408,338.52, 612,717.30 and 168,630.36

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Solution

The fourth proportional to 408,338.52, 612,717.30 and 168,630.36 is: 253,032.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,338.52 : 612,717.30 = 168,630.36 : x
  2. Step 2: Convert to fraction form
    408,338.52/612,717.30 = 168,630.36/x
  3. Step 3: Cross multiply
    408,338.52x = 612,717.30 × 168,630.36
  4. Step 4: Simplify right side
    408,338.52x = 103,322,738,877.23
  5. Step 5: Solve for x
    x = 103,322,738,877.23/408,338.52
  6. Step 6: Final answer
    x = 253,032.06

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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.