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Finding the Fourth Proportional to 298,112.40, 447,168.60 and 76,496.40

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Solution

The fourth proportional to 298,112.40, 447,168.60 and 76,496.40 is: 114,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,112.40 : 447,168.60 = 76,496.40 : x
  2. Step 2: Convert to fraction form
    298,112.40/447,168.60 = 76,496.40/x
  3. Step 3: Cross multiply
    298,112.40x = 447,168.60 × 76,496.40
  4. Step 4: Simplify right side
    298,112.40x = 34,206,788,093.04
  5. Step 5: Solve for x
    x = 34,206,788,093.04/298,112.40
  6. Step 6: Final answer
    x = 114,744.60

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1.5x scale

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.