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Finding the Fourth Proportional to 318,969.56, 440,172.83 and 173,777.08

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Solution

The fourth proportional to 318,969.56, 440,172.83 and 173,777.08 is: 239,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,969.56 : 440,172.83 = 173,777.08 : x
  2. Step 2: Convert to fraction form
    318,969.56/440,172.83 = 173,777.08/x
  3. Step 3: Cross multiply
    318,969.56x = 440,172.83 × 173,777.08
  4. Step 4: Simplify right side
    318,969.56x = 76,491,948,426.75
  5. Step 5: Solve for x
    x = 76,491,948,426.75/318,969.56
  6. Step 6: Final answer
    x = 239,809.55

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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.