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Finding the Fourth Proportional to 248,511, 342,977.58 and 147,909

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Solution

The fourth proportional to 248,511, 342,977.58 and 147,909 is: 204,133.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,511 : 342,977.58 = 147,909 : x
  2. Step 2: Convert to fraction form
    248,511/342,977.58 = 147,909/x
  3. Step 3: Cross multiply
    248,511x = 342,977.58 × 147,909
  4. Step 4: Simplify right side
    248,511x = 50,729,470,880.22
  5. Step 5: Solve for x
    x = 50,729,470,880.22/248,511
  6. Step 6: Final answer
    x = 204,133.70

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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.