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Finding the Fourth Proportional to 318,664.73, 477,775.67 and 141,074.87

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Solution

The fourth proportional to 318,664.73, 477,775.67 and 141,074.87 is: 211,514.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,664.73 : 477,775.67 = 141,074.87 : x
  2. Step 2: Convert to fraction form
    318,664.73/477,775.67 = 141,074.87/x
  3. Step 3: Cross multiply
    318,664.73x = 477,775.67 × 141,074.87
  4. Step 4: Simplify right side
    318,664.73x = 67,402,137,440.16
  5. Step 5: Solve for x
    x = 67,402,137,440.16/318,664.73
  6. Step 6: Final answer
    x = 211,514.27

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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.