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Finding the Fourth Proportional to 408,607.18, 612,778.80 and 148,907.77

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Solution

The fourth proportional to 408,607.18, 612,778.80 and 148,907.77 is: 223,313.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,607.18 : 612,778.80 = 148,907.77 : x
  2. Step 2: Convert to fraction form
    408,607.18/612,778.80 = 148,907.77/x
  3. Step 3: Cross multiply
    408,607.18x = 612,778.80 × 148,907.77
  4. Step 4: Simplify right side
    408,607.18x = 91,247,524,611.28
  5. Step 5: Solve for x
    x = 91,247,524,611.28/408,607.18
  6. Step 6: Final answer
    x = 223,313.56

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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.