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Finding the Fourth Proportional to 256,582.70, 384,290.85 and 131,777.90

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Solution

The fourth proportional to 256,582.70, 384,290.85 and 131,777.90 is: 197,367.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,582.70 : 384,290.85 = 131,777.90 : x
  2. Step 2: Convert to fraction form
    256,582.70/384,290.85 = 131,777.90/x
  3. Step 3: Cross multiply
    256,582.70x = 384,290.85 × 131,777.90
  4. Step 4: Simplify right side
    256,582.70x = 50,641,041,202.22
  5. Step 5: Solve for x
    x = 50,641,041,202.22/256,582.70
  6. Step 6: Final answer
    x = 197,367.33

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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.