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Finding the Fourth Proportional to 218,362.80, 301,338.72 and 122,867.58

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Solution

The fourth proportional to 218,362.80, 301,338.72 and 122,867.58 is: 169,556.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,362.80 : 301,338.72 = 122,867.58 : x
  2. Step 2: Convert to fraction form
    218,362.80/301,338.72 = 122,867.58/x
  3. Step 3: Cross multiply
    218,362.80x = 301,338.72 × 122,867.58
  4. Step 4: Simplify right side
    218,362.80x = 37,024,759,286.70
  5. Step 5: Solve for x
    x = 37,024,759,286.70/218,362.80
  6. Step 6: Final answer
    x = 169,556.17

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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.