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Finding the Fourth Proportional to 326,728.41, 490,153.83 and 146,809.39

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Solution

The fourth proportional to 326,728.41, 490,153.83 and 146,809.39 is: 220,241.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,728.41 : 490,153.83 = 146,809.39 : x
  2. Step 2: Convert to fraction form
    326,728.41/490,153.83 = 146,809.39/x
  3. Step 3: Cross multiply
    326,728.41x = 490,153.83 × 146,809.39
  4. Step 4: Simplify right side
    326,728.41x = 71,959,184,054.42
  5. Step 5: Solve for x
    x = 71,959,184,054.42/326,728.41
  6. Step 6: Final answer
    x = 220,241.59

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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.