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Finding the Fourth Proportional to 383,218.80, 574,828.20 and 133,868.40

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Solution

The fourth proportional to 383,218.80, 574,828.20 and 133,868.40 is: 200,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,218.80 : 574,828.20 = 133,868.40 : x
  2. Step 2: Convert to fraction form
    383,218.80/574,828.20 = 133,868.40/x
  3. Step 3: Cross multiply
    383,218.80x = 574,828.20 × 133,868.40
  4. Step 4: Simplify right side
    383,218.80x = 76,951,331,408.88
  5. Step 5: Solve for x
    x = 76,951,331,408.88/383,218.80
  6. Step 6: Final answer
    x = 200,802.60

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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.