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Finding the Fourth Proportional to 488,540.16, 674,140.32 and 273,689.28

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Solution

The fourth proportional to 488,540.16, 674,140.32 and 273,689.28 is: 377,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,540.16 : 674,140.32 = 273,689.28 : x
  2. Step 2: Convert to fraction form
    488,540.16/674,140.32 = 273,689.28/x
  3. Step 3: Cross multiply
    488,540.16x = 674,140.32 × 273,689.28
  4. Step 4: Simplify right side
    488,540.16x = 184,504,978,799.77
  5. Step 5: Solve for x
    x = 184,504,978,799.77/488,540.16
  6. Step 6: Final answer
    x = 377,665.94

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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.