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Finding the Fourth Proportional to 252,039.04, 347,813.69 and 138,861.79

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Solution

The fourth proportional to 252,039.04, 347,813.69 and 138,861.79 is: 191,629.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,039.04 : 347,813.69 = 138,861.79 : x
  2. Step 2: Convert to fraction form
    252,039.04/347,813.69 = 138,861.79/x
  3. Step 3: Cross multiply
    252,039.04x = 347,813.69 × 138,861.79
  4. Step 4: Simplify right side
    252,039.04x = 48,298,031,059.17
  5. Step 5: Solve for x
    x = 48,298,031,059.17/252,039.04
  6. Step 6: Final answer
    x = 191,629.17

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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.