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Finding the Fourth Proportional to 218,590.61, 301,670.49 and 121,800.89

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Solution

The fourth proportional to 218,590.61, 301,670.49 and 121,800.89 is: 168,093.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,590.61 : 301,670.49 = 121,800.89 : x
  2. Step 2: Convert to fraction form
    218,590.61/301,670.49 = 121,800.89/x
  3. Step 3: Cross multiply
    218,590.61x = 301,670.49 × 121,800.89
  4. Step 4: Simplify right side
    218,590.61x = 36,743,734,168.74
  5. Step 5: Solve for x
    x = 36,743,734,168.74/218,590.61
  6. Step 6: Final answer
    x = 168,093.84

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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.