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Finding the Fourth Proportional to 298,812.40, 449,093.40 and 260,321.20

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Solution

The fourth proportional to 298,812.40, 449,093.40 and 260,321.20 is: 391,243.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,812.40 : 449,093.40 = 260,321.20 : x
  2. Step 2: Convert to fraction form
    298,812.40/449,093.40 = 260,321.20/x
  3. Step 3: Cross multiply
    298,812.40x = 449,093.40 × 260,321.20
  4. Step 4: Simplify right side
    298,812.40x = 116,908,532,800.08
  5. Step 5: Solve for x
    x = 116,908,532,800.08/298,812.40
  6. Step 6: Final answer
    x = 391,243.91

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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.