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Finding the Fourth Proportional to 361,855.35, 499,285.62 and 208,890.90

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Solution

The fourth proportional to 361,855.35, 499,285.62 and 208,890.90 is: 288,226.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,855.35 : 499,285.62 = 208,890.90 : x
  2. Step 2: Convert to fraction form
    361,855.35/499,285.62 = 208,890.90/x
  3. Step 3: Cross multiply
    361,855.35x = 499,285.62 × 208,890.90
  4. Step 4: Simplify right side
    361,855.35x = 104,296,222,518.86
  5. Step 5: Solve for x
    x = 104,296,222,518.86/361,855.35
  6. Step 6: Final answer
    x = 288,226.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.