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Finding the Fourth Proportional to 383,930.86, 575,448 and 288,855.70

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Solution

The fourth proportional to 383,930.86, 575,448 and 288,855.70 is: 432,946.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,930.86 : 575,448 = 288,855.70 : x
  2. Step 2: Convert to fraction form
    383,930.86/575,448 = 288,855.70/x
  3. Step 3: Cross multiply
    383,930.86x = 575,448 × 288,855.70
  4. Step 4: Simplify right side
    383,930.86x = 166,221,434,853.60
  5. Step 5: Solve for x
    x = 166,221,434,853.60/383,930.86
  6. Step 6: Final answer
    x = 432,946.27

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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.