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Finding the Fourth Proportional to 311,548.80, 467,438.40 and 300,028.80

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Solution

The fourth proportional to 311,548.80, 467,438.40 and 300,028.80 is: 450,154.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,548.80 : 467,438.40 = 300,028.80 : x
  2. Step 2: Convert to fraction form
    311,548.80/467,438.40 = 300,028.80/x
  3. Step 3: Cross multiply
    311,548.80x = 467,438.40 × 300,028.80
  4. Step 4: Simplify right side
    311,548.80x = 140,244,982,225.92
  5. Step 5: Solve for x
    x = 140,244,982,225.92/311,548.80
  6. Step 6: Final answer
    x = 450,154.14

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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.