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Finding the Fourth Proportional to 417,879.16, 576,724.24 and 245,788.91

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Solution

The fourth proportional to 417,879.16, 576,724.24 and 245,788.91 is: 339,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,879.16 : 576,724.24 = 245,788.91 : x
  2. Step 2: Convert to fraction form
    417,879.16/576,724.24 = 245,788.91/x
  3. Step 3: Cross multiply
    417,879.16x = 576,724.24 × 245,788.91
  4. Step 4: Simplify right side
    417,879.16x = 141,752,418,207.61
  5. Step 5: Solve for x
    x = 141,752,418,207.61/417,879.16
  6. Step 6: Final answer
    x = 339,218.69

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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.