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Finding the Fourth Proportional to 253,790.62, 380,733.94 and 101,999.49

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Solution

The fourth proportional to 253,790.62, 380,733.94 and 101,999.49 is: 153,018.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,790.62 : 380,733.94 = 101,999.49 : x
  2. Step 2: Convert to fraction form
    253,790.62/380,733.94 = 101,999.49/x
  3. Step 3: Cross multiply
    253,790.62x = 380,733.94 × 101,999.49
  4. Step 4: Simplify right side
    253,790.62x = 38,834,666,405.44
  5. Step 5: Solve for x
    x = 38,834,666,405.44/253,790.62
  6. Step 6: Final answer
    x = 153,018.53

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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.