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Finding the Fourth Proportional to 377,054.34, 520,346.61 and 215,961.54

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Solution

The fourth proportional to 377,054.34, 520,346.61 and 215,961.54 is: 298,033.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,054.34 : 520,346.61 = 215,961.54 : x
  2. Step 2: Convert to fraction form
    377,054.34/520,346.61 = 215,961.54/x
  3. Step 3: Cross multiply
    377,054.34x = 520,346.61 × 215,961.54
  4. Step 4: Simplify right side
    377,054.34x = 112,374,855,229.38
  5. Step 5: Solve for x
    x = 112,374,855,229.38/377,054.34
  6. Step 6: Final answer
    x = 298,033.58

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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.