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Finding the Fourth Proportional to 218,596.39, 301,658.48 and 121,799.86

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Solution

The fourth proportional to 218,596.39, 301,658.48 and 121,799.86 is: 168,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,596.39 : 301,658.48 = 121,799.86 : x
  2. Step 2: Convert to fraction form
    218,596.39/301,658.48 = 121,799.86/x
  3. Step 3: Cross multiply
    218,596.39x = 301,658.48 × 121,799.86
  4. Step 4: Simplify right side
    218,596.39x = 36,741,960,631.81
  5. Step 5: Solve for x
    x = 36,741,960,631.81/218,596.39
  6. Step 6: Final answer
    x = 168,081.28

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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.