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Finding the Fourth Proportional to 218,383.37, 301,368.91 and 122,890.15

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Solution

The fourth proportional to 218,383.37, 301,368.91 and 122,890.15 is: 169,588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,383.37 : 301,368.91 = 122,890.15 : x
  2. Step 2: Convert to fraction form
    218,383.37/301,368.91 = 122,890.15/x
  3. Step 3: Cross multiply
    218,383.37x = 301,368.91 × 122,890.15
  4. Step 4: Simplify right side
    218,383.37x = 37,035,268,433.94
  5. Step 5: Solve for x
    x = 37,035,268,433.94/218,383.37
  6. Step 6: Final answer
    x = 169,588.32

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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.