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Finding the Fourth Proportional to 219,299.89, 302,633.93 and 123,812.74

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Solution

The fourth proportional to 219,299.89, 302,633.93 and 123,812.74 is: 170,861.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,299.89 : 302,633.93 = 123,812.74 : x
  2. Step 2: Convert to fraction form
    219,299.89/302,633.93 = 123,812.74/x
  3. Step 3: Cross multiply
    219,299.89x = 302,633.93 × 123,812.74
  4. Step 4: Simplify right side
    219,299.89x = 37,469,936,090.27
  5. Step 5: Solve for x
    x = 37,469,936,090.27/219,299.89
  6. Step 6: Final answer
    x = 170,861.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.