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Finding the Fourth Proportional to 291,338.40, 436,829.40 and 113,640.60

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Solution

The fourth proportional to 291,338.40, 436,829.40 and 113,640.60 is: 170,391.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,338.40 : 436,829.40 = 113,640.60 : x
  2. Step 2: Convert to fraction form
    291,338.40/436,829.40 = 113,640.60/x
  3. Step 3: Cross multiply
    291,338.40x = 436,829.40 × 113,640.60
  4. Step 4: Simplify right side
    291,338.40x = 49,641,555,113.64
  5. Step 5: Solve for x
    x = 49,641,555,113.64/291,338.40
  6. Step 6: Final answer
    x = 170,391.39

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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.