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Finding the Fourth Proportional to 395,382.90, 545,593.68 and 234,210.72

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Solution

The fourth proportional to 395,382.90, 545,593.68 and 234,210.72 is: 323,190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,382.90 : 545,593.68 = 234,210.72 : x
  2. Step 2: Convert to fraction form
    395,382.90/545,593.68 = 234,210.72/x
  3. Step 3: Cross multiply
    395,382.90x = 545,593.68 × 234,210.72
  4. Step 4: Simplify right side
    395,382.90x = 127,783,888,620.25
  5. Step 5: Solve for x
    x = 127,783,888,620.25/395,382.90
  6. Step 6: Final answer
    x = 323,190.23

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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.