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Finding the Fourth Proportional to 298,641.45, 447,961.35 and 245,939.61

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Solution

The fourth proportional to 298,641.45, 447,961.35 and 245,939.61 is: 368,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,641.45 : 447,961.35 = 245,939.61 : x
  2. Step 2: Convert to fraction form
    298,641.45/447,961.35 = 245,939.61/x
  3. Step 3: Cross multiply
    298,641.45x = 447,961.35 × 245,939.61
  4. Step 4: Simplify right side
    298,641.45x = 110,171,439,714.07
  5. Step 5: Solve for x
    x = 110,171,439,714.07/298,641.45
  6. Step 6: Final answer
    x = 368,908.74

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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.