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Finding the Fourth Proportional to 318,990.12, 440,216.34 and 183,048.96

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Solution

The fourth proportional to 318,990.12, 440,216.34 and 183,048.96 is: 252,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,990.12 : 440,216.34 = 183,048.96 : x
  2. Step 2: Convert to fraction form
    318,990.12/440,216.34 = 183,048.96/x
  3. Step 3: Cross multiply
    318,990.12x = 440,216.34 × 183,048.96
  4. Step 4: Simplify right side
    318,990.12x = 80,581,143,212.01
  5. Step 5: Solve for x
    x = 80,581,143,212.01/318,990.12
  6. Step 6: Final answer
    x = 252,613.29

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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.