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Finding the Fourth Proportional to 399,383, 599,475.44 and 186,296.28

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Solution

The fourth proportional to 399,383, 599,475.44 and 186,296.28 is: 279,631.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,383 : 599,475.44 = 186,296.28 : x
  2. Step 2: Convert to fraction form
    399,383/599,475.44 = 186,296.28/x
  3. Step 3: Cross multiply
    399,383x = 599,475.44 × 186,296.28
  4. Step 4: Simplify right side
    399,383x = 111,680,044,423.36
  5. Step 5: Solve for x
    x = 111,680,044,423.36/399,383
  6. Step 6: Final answer
    x = 279,631.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.