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Finding the Fourth Proportional to 419,882.89, 579,379.95 and 247,808.05

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Solution

The fourth proportional to 419,882.89, 579,379.95 and 247,808.05 is: 341,940.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,882.89 : 579,379.95 = 247,808.05 : x
  2. Step 2: Convert to fraction form
    419,882.89/579,379.95 = 247,808.05/x
  3. Step 3: Cross multiply
    419,882.89x = 579,379.95 × 247,808.05
  4. Step 4: Simplify right side
    419,882.89x = 143,575,015,618.60
  5. Step 5: Solve for x
    x = 143,575,015,618.60/419,882.89
  6. Step 6: Final answer
    x = 341,940.62

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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.