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Finding the Fourth Proportional to 318,431.30, 477,506.72 and 168,636.58

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Solution

The fourth proportional to 318,431.30, 477,506.72 and 168,636.58 is: 252,880.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,431.30 : 477,506.72 = 168,636.58 : x
  2. Step 2: Convert to fraction form
    318,431.30/477,506.72 = 168,636.58/x
  3. Step 3: Cross multiply
    318,431.30x = 477,506.72 × 168,636.58
  4. Step 4: Simplify right side
    318,431.30x = 80,525,101,627.33
  5. Step 5: Solve for x
    x = 80,525,101,627.33/318,431.30
  6. Step 6: Final answer
    x = 252,880.61

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1.5x scale

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.