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Finding the Fourth Proportional to 326,817.60, 490,226.40 and 149,670.60

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Solution

The fourth proportional to 326,817.60, 490,226.40 and 149,670.60 is: 224,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,817.60 : 490,226.40 = 149,670.60 : x
  2. Step 2: Convert to fraction form
    326,817.60/490,226.40 = 149,670.60/x
  3. Step 3: Cross multiply
    326,817.60x = 490,226.40 × 149,670.60
  4. Step 4: Simplify right side
    326,817.60x = 73,372,479,423.84
  5. Step 5: Solve for x
    x = 73,372,479,423.84/326,817.60
  6. Step 6: Final answer
    x = 224,505.90

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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.