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Finding the Fourth Proportional to 218,596.11, 301,678.07 and 121,806.39

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Solution

The fourth proportional to 218,596.11, 301,678.07 and 121,806.39 is: 168,101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,596.11 : 301,678.07 = 121,806.39 : x
  2. Step 2: Convert to fraction form
    218,596.11/301,678.07 = 121,806.39/x
  3. Step 3: Cross multiply
    218,596.11x = 301,678.07 × 121,806.39
  4. Step 4: Simplify right side
    218,596.11x = 36,746,316,039.84
  5. Step 5: Solve for x
    x = 36,746,316,039.84/218,596.11
  6. Step 6: Final answer
    x = 168,101.42

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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.