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Finding the Fourth Proportional to 302,879.54, 417,690.26 and 239,369.06

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Solution

The fourth proportional to 302,879.54, 417,690.26 and 239,369.06 is: 330,105.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,879.54 : 417,690.26 = 239,369.06 : x
  2. Step 2: Convert to fraction form
    302,879.54/417,690.26 = 239,369.06/x
  3. Step 3: Cross multiply
    302,879.54x = 417,690.26 × 239,369.06
  4. Step 4: Simplify right side
    302,879.54x = 99,982,124,907.36
  5. Step 5: Solve for x
    x = 99,982,124,907.36/302,879.54
  6. Step 6: Final answer
    x = 330,105.25

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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.