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Finding the Fourth Proportional to 406,960.20, 610,440.30 and 207,894.60

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Solution

The fourth proportional to 406,960.20, 610,440.30 and 207,894.60 is: 311,841.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,960.20 : 610,440.30 = 207,894.60 : x
  2. Step 2: Convert to fraction form
    406,960.20/610,440.30 = 207,894.60/x
  3. Step 3: Cross multiply
    406,960.20x = 610,440.30 × 207,894.60
  4. Step 4: Simplify right side
    406,960.20x = 126,907,241,992.38
  5. Step 5: Solve for x
    x = 126,907,241,992.38/406,960.20
  6. Step 6: Final answer
    x = 311,841.90

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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.