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Finding the Fourth Proportional to 218,407.92, 301,399.40 and 122,914.56

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Solution

The fourth proportional to 218,407.92, 301,399.40 and 122,914.56 is: 169,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,407.92 : 301,399.40 = 122,914.56 : x
  2. Step 2: Convert to fraction form
    218,407.92/301,399.40 = 122,914.56/x
  3. Step 3: Cross multiply
    218,407.92x = 301,399.40 × 122,914.56
  4. Step 4: Simplify right side
    218,407.92x = 37,046,374,635.26
  5. Step 5: Solve for x
    x = 37,046,374,635.26/218,407.92
  6. Step 6: Final answer
    x = 169,620.11

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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.