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Finding the Fourth Proportional to 383,800.80, 576,392.40 and 371,359.20

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Solution

The fourth proportional to 383,800.80, 576,392.40 and 371,359.20 is: 557,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,800.80 : 576,392.40 = 371,359.20 : x
  2. Step 2: Convert to fraction form
    383,800.80/576,392.40 = 371,359.20/x
  3. Step 3: Cross multiply
    383,800.80x = 576,392.40 × 371,359.20
  4. Step 4: Simplify right side
    383,800.80x = 214,048,620,550.08
  5. Step 5: Solve for x
    x = 214,048,620,550.08/383,800.80
  6. Step 6: Final answer
    x = 557,707.59

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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.