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Finding the Fourth Proportional to 259,657.40, 389,486.10 and 245,879.30

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Solution

The fourth proportional to 259,657.40, 389,486.10 and 245,879.30 is: 368,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,657.40 : 389,486.10 = 245,879.30 : x
  2. Step 2: Convert to fraction form
    259,657.40/389,486.10 = 245,879.30/x
  3. Step 3: Cross multiply
    259,657.40x = 389,486.10 × 245,879.30
  4. Step 4: Simplify right side
    259,657.40x = 95,766,569,627.73
  5. Step 5: Solve for x
    x = 95,766,569,627.73/259,657.40
  6. Step 6: Final answer
    x = 368,818.95

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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.