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Finding the Fourth Proportional to 455,650.96, 628,778.28 and 254,442.64

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Solution

The fourth proportional to 455,650.96, 628,778.28 and 254,442.64 is: 351,119.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,650.96 : 628,778.28 = 254,442.64 : x
  2. Step 2: Convert to fraction form
    455,650.96/628,778.28 = 254,442.64/x
  3. Step 3: Cross multiply
    455,650.96x = 628,778.28 × 254,442.64
  4. Step 4: Simplify right side
    455,650.96x = 159,988,005,537.86
  5. Step 5: Solve for x
    x = 159,988,005,537.86/455,650.96
  6. Step 6: Final answer
    x = 351,119.65

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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.