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Finding the Fourth Proportional to 395,703.37, 545,828.03 and 323,211.61

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Solution

The fourth proportional to 395,703.37, 545,828.03 and 323,211.61 is: 445,833.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,703.37 : 545,828.03 = 323,211.61 : x
  2. Step 2: Convert to fraction form
    395,703.37/545,828.03 = 323,211.61/x
  3. Step 3: Cross multiply
    395,703.37x = 545,828.03 × 323,211.61
  4. Step 4: Simplify right side
    395,703.37x = 176,417,954,438.32
  5. Step 5: Solve for x
    x = 176,417,954,438.32/395,703.37
  6. Step 6: Final answer
    x = 445,833.85

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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.