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Finding the Fourth Proportional to 217,994.70, 300,840.30 and 122,499.48

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Solution

The fourth proportional to 217,994.70, 300,840.30 and 122,499.48 is: 169,053.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,994.70 : 300,840.30 = 122,499.48 : x
  2. Step 2: Convert to fraction form
    217,994.70/300,840.30 = 122,499.48/x
  3. Step 3: Cross multiply
    217,994.70x = 300,840.30 × 122,499.48
  4. Step 4: Simplify right side
    217,994.70x = 36,852,780,313.04
  5. Step 5: Solve for x
    x = 36,852,780,313.04/217,994.70
  6. Step 6: Final answer
    x = 169,053.56

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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.