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Finding the Fourth Proportional to 218,235.86, 301,162.52 and 122,742.53

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Solution

The fourth proportional to 218,235.86, 301,162.52 and 122,742.53 is: 169,383.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,235.86 : 301,162.52 = 122,742.53 : x
  2. Step 2: Convert to fraction form
    218,235.86/301,162.52 = 122,742.53/x
  3. Step 3: Cross multiply
    218,235.86x = 301,162.52 × 122,742.53
  4. Step 4: Simplify right side
    218,235.86x = 36,965,449,645.98
  5. Step 5: Solve for x
    x = 36,965,449,645.98/218,235.86
  6. Step 6: Final answer
    x = 169,383.02

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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.