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Finding the Fourth Proportional to 395,669.84, 545,723 and 340,572.96

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Solution

The fourth proportional to 395,669.84, 545,723 and 340,572.96 is: 469,731.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,669.84 : 545,723 = 340,572.96 : x
  2. Step 2: Convert to fraction form
    395,669.84/545,723 = 340,572.96/x
  3. Step 3: Cross multiply
    395,669.84x = 545,723 × 340,572.96
  4. Step 4: Simplify right side
    395,669.84x = 185,858,497,450.08
  5. Step 5: Solve for x
    x = 185,858,497,450.08/395,669.84
  6. Step 6: Final answer
    x = 469,731.27

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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.