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Finding the Fourth Proportional to 318,556.73, 477,613.67 and 140,966.87

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Solution

The fourth proportional to 318,556.73, 477,613.67 and 140,966.87 is: 211,352.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,556.73 : 477,613.67 = 140,966.87 : x
  2. Step 2: Convert to fraction form
    318,556.73/477,613.67 = 140,966.87/x
  3. Step 3: Cross multiply
    318,556.73x = 477,613.67 × 140,966.87
  4. Step 4: Simplify right side
    318,556.73x = 67,327,701,036.21
  5. Step 5: Solve for x
    x = 67,327,701,036.21/318,556.73
  6. Step 6: Final answer
    x = 211,352.31

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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.