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Finding the Fourth Proportional to 255,790.89, 352,991.40 and 142,613.64

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Solution

The fourth proportional to 255,790.89, 352,991.40 and 142,613.64 is: 196,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,790.89 : 352,991.40 = 142,613.64 : x
  2. Step 2: Convert to fraction form
    255,790.89/352,991.40 = 142,613.64/x
  3. Step 3: Cross multiply
    255,790.89x = 352,991.40 × 142,613.64
  4. Step 4: Simplify right side
    255,790.89x = 50,341,388,442.70
  5. Step 5: Solve for x
    x = 50,341,388,442.70/255,790.89
  6. Step 6: Final answer
    x = 196,806.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.