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Finding the Fourth Proportional to 210,493.33, 315,789.80 and 68,338.33

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Solution

The fourth proportional to 210,493.33, 315,789.80 and 68,338.33 is: 102,523.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,493.33 : 315,789.80 = 68,338.33 : x
  2. Step 2: Convert to fraction form
    210,493.33/315,789.80 = 68,338.33/x
  3. Step 3: Cross multiply
    210,493.33x = 315,789.80 × 68,338.33
  4. Step 4: Simplify right side
    210,493.33x = 21,580,547,563.03
  5. Step 5: Solve for x
    x = 21,580,547,563.03/210,493.33
  6. Step 6: Final answer
    x = 102,523.66

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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.