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Finding the Fourth Proportional to 318,049.33, 476,388.90 and 149,316.81

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Solution

The fourth proportional to 318,049.33, 476,388.90 and 149,316.81 is: 223,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,049.33 : 476,388.90 = 149,316.81 : x
  2. Step 2: Convert to fraction form
    318,049.33/476,388.90 = 149,316.81/x
  3. Step 3: Cross multiply
    318,049.33x = 476,388.90 × 149,316.81
  4. Step 4: Simplify right side
    318,049.33x = 71,132,870,867.41
  5. Step 5: Solve for x
    x = 71,132,870,867.41/318,049.33
  6. Step 6: Final answer
    x = 223,653.58

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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.