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Finding the Fourth Proportional to 218,395.53, 301,361.09 and 122,899.77

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Solution

The fourth proportional to 218,395.53, 301,361.09 and 122,899.77 is: 169,587.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,395.53 : 301,361.09 = 122,899.77 : x
  2. Step 2: Convert to fraction form
    218,395.53/301,361.09 = 122,899.77/x
  3. Step 3: Cross multiply
    218,395.53x = 301,361.09 × 122,899.77
  4. Step 4: Simplify right side
    218,395.53x = 37,037,208,033.45
  5. Step 5: Solve for x
    x = 37,037,208,033.45/218,395.53
  6. Step 6: Final answer
    x = 169,587.76

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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.