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Finding the Fourth Proportional to 377,668.42, 520,189.59 and 290,286.41

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Solution

The fourth proportional to 377,668.42, 520,189.59 and 290,286.41 is: 399,832.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,668.42 : 520,189.59 = 290,286.41 : x
  2. Step 2: Convert to fraction form
    377,668.42/520,189.59 = 290,286.41/x
  3. Step 3: Cross multiply
    377,668.42x = 520,189.59 × 290,286.41
  4. Step 4: Simplify right side
    377,668.42x = 151,003,970,014.16
  5. Step 5: Solve for x
    x = 151,003,970,014.16/377,668.42
  6. Step 6: Final answer
    x = 399,832.14

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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.