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Finding the Fourth Proportional to 319,309.08, 440,647.25 and 176,067.87

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Solution

The fourth proportional to 319,309.08, 440,647.25 and 176,067.87 is: 242,974.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,309.08 : 440,647.25 = 176,067.87 : x
  2. Step 2: Convert to fraction form
    319,309.08/440,647.25 = 176,067.87/x
  3. Step 3: Cross multiply
    319,309.08x = 440,647.25 × 176,067.87
  4. Step 4: Simplify right side
    319,309.08x = 77,583,822,728.86
  5. Step 5: Solve for x
    x = 77,583,822,728.86/319,309.08
  6. Step 6: Final answer
    x = 242,974.06

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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.