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Finding the Fourth Proportional to 210,342.36, 315,605.70 and 110,479.44

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Solution

The fourth proportional to 210,342.36, 315,605.70 and 110,479.44 is: 165,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,342.36 : 315,605.70 = 110,479.44 : x
  2. Step 2: Convert to fraction form
    210,342.36/315,605.70 = 110,479.44/x
  3. Step 3: Cross multiply
    210,342.36x = 315,605.70 × 110,479.44
  4. Step 4: Simplify right side
    210,342.36x = 34,867,940,996.81
  5. Step 5: Solve for x
    x = 34,867,940,996.81/210,342.36
  6. Step 6: Final answer
    x = 165,767.57

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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.