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Finding the Fourth Proportional to 298,639.95, 447,959.12 and 245,938.11

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Solution

The fourth proportional to 298,639.95, 447,959.12 and 245,938.11 is: 368,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,639.95 : 447,959.12 = 245,938.11 : x
  2. Step 2: Convert to fraction form
    298,639.95/447,959.12 = 245,938.11/x
  3. Step 3: Cross multiply
    298,639.95x = 447,959.12 × 245,938.11
  4. Step 4: Simplify right side
    298,639.95x = 110,170,218,100.37
  5. Step 5: Solve for x
    x = 110,170,218,100.37/298,639.95
  6. Step 6: Final answer
    x = 368,906.50

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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.