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Finding the Fourth Proportional to 254,161.58, 380,641.23 and 220,699.78

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Solution

The fourth proportional to 254,161.58, 380,641.23 and 220,699.78 is: 330,527.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,161.58 : 380,641.23 = 220,699.78 : x
  2. Step 2: Convert to fraction form
    254,161.58/380,641.23 = 220,699.78/x
  3. Step 3: Cross multiply
    254,161.58x = 380,641.23 × 220,699.78
  4. Step 4: Simplify right side
    254,161.58x = 84,007,434,768.33
  5. Step 5: Solve for x
    x = 84,007,434,768.33/254,161.58
  6. Step 6: Final answer
    x = 330,527.68

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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.