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Finding the Fourth Proportional to 358,199.20, 537,687.60 and 279,661.60

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Solution

The fourth proportional to 358,199.20, 537,687.60 and 279,661.60 is: 419,795.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,199.20 : 537,687.60 = 279,661.60 : x
  2. Step 2: Convert to fraction form
    358,199.20/537,687.60 = 279,661.60/x
  3. Step 3: Cross multiply
    358,199.20x = 537,687.60 × 279,661.60
  4. Step 4: Simplify right side
    358,199.20x = 150,370,574,516.16
  5. Step 5: Solve for x
    x = 150,370,574,516.16/358,199.20
  6. Step 6: Final answer
    x = 419,795.95

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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.