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Finding the Fourth Proportional to 298,453.02, 447,697.06 and 85,204.54

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Solution

The fourth proportional to 298,453.02, 447,697.06 and 85,204.54 is: 127,811.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,453.02 : 447,697.06 = 85,204.54 : x
  2. Step 2: Convert to fraction form
    298,453.02/447,697.06 = 85,204.54/x
  3. Step 3: Cross multiply
    298,453.02x = 447,697.06 × 85,204.54
  4. Step 4: Simplify right side
    298,453.02x = 38,145,822,403.26
  5. Step 5: Solve for x
    x = 38,145,822,403.26/298,453.02
  6. Step 6: Final answer
    x = 127,811.82

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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.