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Finding the Fourth Proportional to 218,388.63, 301,375.35 and 122,896.92

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Solution

The fourth proportional to 218,388.63, 301,375.35 and 122,896.92 is: 169,597.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,388.63 : 301,375.35 = 122,896.92 : x
  2. Step 2: Convert to fraction form
    218,388.63/301,375.35 = 122,896.92/x
  3. Step 3: Cross multiply
    218,388.63x = 301,375.35 × 122,896.92
  4. Step 4: Simplify right side
    218,388.63x = 37,038,102,278.92
  5. Step 5: Solve for x
    x = 37,038,102,278.92/218,388.63
  6. Step 6: Final answer
    x = 169,597.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.