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Finding the Fourth Proportional to 252,455.37, 378,703.23 and 83,969.61

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Solution

The fourth proportional to 252,455.37, 378,703.23 and 83,969.61 is: 125,961.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,455.37 : 378,703.23 = 83,969.61 : x
  2. Step 2: Convert to fraction form
    252,455.37/378,703.23 = 83,969.61/x
  3. Step 3: Cross multiply
    252,455.37x = 378,703.23 × 83,969.61
  4. Step 4: Simplify right side
    252,455.37x = 31,799,562,528.84
  5. Step 5: Solve for x
    x = 31,799,562,528.84/252,455.37
  6. Step 6: Final answer
    x = 125,961.13

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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.