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Finding the Fourth Proportional to 318,357.57, 477,595.42 and 105,140.26

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Solution

The fourth proportional to 318,357.57, 477,595.42 and 105,140.26 is: 157,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,357.57 : 477,595.42 = 105,140.26 : x
  2. Step 2: Convert to fraction form
    318,357.57/477,595.42 = 105,140.26/x
  3. Step 3: Cross multiply
    318,357.57x = 477,595.42 × 105,140.26
  4. Step 4: Simplify right side
    318,357.57x = 50,214,504,245.63
  5. Step 5: Solve for x
    x = 50,214,504,245.63/318,357.57
  6. Step 6: Final answer
    x = 157,729.89

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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.