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Finding the Fourth Proportional to 488,990.40, 733,793.40 and 208,503.60

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Solution

The fourth proportional to 488,990.40, 733,793.40 and 208,503.60 is: 312,886.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,990.40 : 733,793.40 = 208,503.60 : x
  2. Step 2: Convert to fraction form
    488,990.40/733,793.40 = 208,503.60/x
  3. Step 3: Cross multiply
    488,990.40x = 733,793.40 × 208,503.60
  4. Step 4: Simplify right side
    488,990.40x = 152,998,565,556.24
  5. Step 5: Solve for x
    x = 152,998,565,556.24/488,990.40
  6. Step 6: Final answer
    x = 312,886.64

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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.