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Finding the Fourth Proportional to 478,745.18, 660,638.31 and 263,873.42

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Solution

The fourth proportional to 478,745.18, 660,638.31 and 263,873.42 is: 364,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,745.18 : 660,638.31 = 263,873.42 : x
  2. Step 2: Convert to fraction form
    478,745.18/660,638.31 = 263,873.42/x
  3. Step 3: Cross multiply
    478,745.18x = 660,638.31 × 263,873.42
  4. Step 4: Simplify right side
    478,745.18x = 174,324,890,242.72
  5. Step 5: Solve for x
    x = 174,324,890,242.72/478,745.18
  6. Step 6: Final answer
    x = 364,128.76

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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.