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Finding the Fourth Proportional to 223,485.40, 335,438.76 and 81,467.92

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Solution

The fourth proportional to 223,485.40, 335,438.76 and 81,467.92 is: 122,278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,485.40 : 335,438.76 = 81,467.92 : x
  2. Step 2: Convert to fraction form
    223,485.40/335,438.76 = 81,467.92/x
  3. Step 3: Cross multiply
    223,485.40x = 335,438.76 × 81,467.92
  4. Step 4: Simplify right side
    223,485.40x = 27,327,498,064.58
  5. Step 5: Solve for x
    x = 27,327,498,064.58/223,485.40
  6. Step 6: Final answer
    x = 122,278.67

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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.