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Finding the Fourth Proportional to 285,868, 428,802 and 119,656

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Solution

The fourth proportional to 285,868, 428,802 and 119,656 is: 179,484

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,868 : 428,802 = 119,656 : x
  2. Step 2: Convert to fraction form
    285,868/428,802 = 119,656/x
  3. Step 3: Cross multiply
    285,868x = 428,802 × 119,656
  4. Step 4: Simplify right side
    285,868x = 51,308,732,112
  5. Step 5: Solve for x
    x = 51,308,732,112/285,868
  6. Step 6: Final answer
    x = 179,484

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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.