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Finding the Fourth Proportional to 417,879.78, 576,725.10 and 245,789.54

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Solution

The fourth proportional to 417,879.78, 576,725.10 and 245,789.54 is: 339,219.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,879.78 : 576,725.10 = 245,789.54 : x
  2. Step 2: Convert to fraction form
    417,879.78/576,725.10 = 245,789.54/x
  3. Step 3: Cross multiply
    417,879.78x = 576,725.10 × 245,789.54
  4. Step 4: Simplify right side
    417,879.78x = 141,752,994,151.83
  5. Step 5: Solve for x
    x = 141,752,994,151.83/417,879.78
  6. Step 6: Final answer
    x = 339,219.56

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1.5x scale

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.