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Finding the Fourth Proportional to 408,596.04, 612,992.22 and 128,113.32

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Solution

The fourth proportional to 408,596.04, 612,992.22 and 128,113.32 is: 192,200.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,596.04 : 612,992.22 = 128,113.32 : x
  2. Step 2: Convert to fraction form
    408,596.04/612,992.22 = 128,113.32/x
  3. Step 3: Cross multiply
    408,596.04x = 612,992.22 × 128,113.32
  4. Step 4: Simplify right side
    408,596.04x = 78,532,468,438.37
  5. Step 5: Solve for x
    x = 78,532,468,438.37/408,596.04
  6. Step 6: Final answer
    x = 192,200.76

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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.