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Finding the Fourth Proportional to 218,462, 301,458.36 and 121,658.54

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Solution

The fourth proportional to 218,462, 301,458.36 and 121,658.54 is: 167,878.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,462 : 301,458.36 = 121,658.54 : x
  2. Step 2: Convert to fraction form
    218,462/301,458.36 = 121,658.54/x
  3. Step 3: Cross multiply
    218,462x = 301,458.36 × 121,658.54
  4. Step 4: Simplify right side
    218,462x = 36,674,983,948.39
  5. Step 5: Solve for x
    x = 36,674,983,948.39/218,462
  6. Step 6: Final answer
    x = 167,878.09

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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.