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Finding the Fourth Proportional to 319,311, 440,644.32 and 176,067.36

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Solution

The fourth proportional to 319,311, 440,644.32 and 176,067.36 is: 242,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,311 : 440,644.32 = 176,067.36 : x
  2. Step 2: Convert to fraction form
    319,311/440,644.32 = 176,067.36/x
  3. Step 3: Cross multiply
    319,311x = 440,644.32 × 176,067.36
  4. Step 4: Simplify right side
    319,311x = 77,583,082,121.40
  5. Step 5: Solve for x
    x = 77,583,082,121.40/319,311
  6. Step 6: Final answer
    x = 242,970.28

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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.