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Finding the Fourth Proportional to 245,511, 338,805.54 and 144,909

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Solution

The fourth proportional to 245,511, 338,805.54 and 144,909 is: 199,974.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,511 : 338,805.54 = 144,909 : x
  2. Step 2: Convert to fraction form
    245,511/338,805.54 = 144,909/x
  3. Step 3: Cross multiply
    245,511x = 338,805.54 × 144,909
  4. Step 4: Simplify right side
    245,511x = 49,095,971,995.86
  5. Step 5: Solve for x
    x = 49,095,971,995.86/245,511
  6. Step 6: Final answer
    x = 199,974.63

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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.