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Finding the Fourth Proportional to 311,790.60, 430,268.36 and 168,549.39

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Solution

The fourth proportional to 311,790.60, 430,268.36 and 168,549.39 is: 232,596.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,790.60 : 430,268.36 = 168,549.39 : x
  2. Step 2: Convert to fraction form
    311,790.60/430,268.36 = 168,549.39/x
  3. Step 3: Cross multiply
    311,790.60x = 430,268.36 × 168,549.39
  4. Step 4: Simplify right side
    311,790.60x = 72,521,468,771.55
  5. Step 5: Solve for x
    x = 72,521,468,771.55/311,790.60
  6. Step 6: Final answer
    x = 232,596.71

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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.