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Finding the Fourth Proportional to 218,361.80, 301,337.34 and 122,866.58

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Solution

The fourth proportional to 218,361.80, 301,337.34 and 122,866.58 is: 169,554.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,361.80 : 301,337.34 = 122,866.58 : x
  2. Step 2: Convert to fraction form
    218,361.80/301,337.34 = 122,866.58/x
  3. Step 3: Cross multiply
    218,361.80x = 301,337.34 × 122,866.58
  4. Step 4: Simplify right side
    218,361.80x = 37,024,288,392.10
  5. Step 5: Solve for x
    x = 37,024,288,392.10/218,361.80
  6. Step 6: Final answer
    x = 169,554.79

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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.