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Finding the Fourth Proportional to 298,934.10, 448,401.15 and 121,568.40

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Solution

The fourth proportional to 298,934.10, 448,401.15 and 121,568.40 is: 182,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,934.10 : 448,401.15 = 121,568.40 : x
  2. Step 2: Convert to fraction form
    298,934.10/448,401.15 = 121,568.40/x
  3. Step 3: Cross multiply
    298,934.10x = 448,401.15 × 121,568.40
  4. Step 4: Simplify right side
    298,934.10x = 54,511,410,363.66
  5. Step 5: Solve for x
    x = 54,511,410,363.66/298,934.10
  6. Step 6: Final answer
    x = 182,352.60

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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.