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Finding the Fourth Proportional to 210,151.44, 315,229.90 and 69,910.06

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Solution

The fourth proportional to 210,151.44, 315,229.90 and 69,910.06 is: 104,866.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,151.44 : 315,229.90 = 69,910.06 : x
  2. Step 2: Convert to fraction form
    210,151.44/315,229.90 = 69,910.06/x
  3. Step 3: Cross multiply
    210,151.44x = 315,229.90 × 69,910.06
  4. Step 4: Simplify right side
    210,151.44x = 22,037,741,222.79
  5. Step 5: Solve for x
    x = 22,037,741,222.79/210,151.44
  6. Step 6: Final answer
    x = 104,866.00

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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.