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Finding the Fourth Proportional to 289,055.62, 398,631.71 and 248,205.85

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Solution

The fourth proportional to 289,055.62, 398,631.71 and 248,205.85 is: 342,296.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,055.62 : 398,631.71 = 248,205.85 : x
  2. Step 2: Convert to fraction form
    289,055.62/398,631.71 = 248,205.85/x
  3. Step 3: Cross multiply
    289,055.62x = 398,631.71 × 248,205.85
  4. Step 4: Simplify right side
    289,055.62x = 98,942,719,183.32
  5. Step 5: Solve for x
    x = 98,942,719,183.32/289,055.62
  6. Step 6: Final answer
    x = 342,296.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.