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Finding the Fourth Proportional to 318,025.63, 477,036.01 and 81,367.93

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Solution

The fourth proportional to 318,025.63, 477,036.01 and 81,367.93 is: 122,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,025.63 : 477,036.01 = 81,367.93 : x
  2. Step 2: Convert to fraction form
    318,025.63/477,036.01 = 81,367.93/x
  3. Step 3: Cross multiply
    318,025.63x = 477,036.01 × 81,367.93
  4. Step 4: Simplify right side
    318,025.63x = 38,815,431,273.15
  5. Step 5: Solve for x
    x = 38,815,431,273.15/318,025.63
  6. Step 6: Final answer
    x = 122,051.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.