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Finding the Fourth Proportional to 395,694.90, 546,085.74 and 223,553.16

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Solution

The fourth proportional to 395,694.90, 546,085.74 and 223,553.16 is: 308,518.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,694.90 : 546,085.74 = 223,553.16 : x
  2. Step 2: Convert to fraction form
    395,694.90/546,085.74 = 223,553.16/x
  3. Step 3: Cross multiply
    395,694.90x = 546,085.74 × 223,553.16
  4. Step 4: Simplify right side
    395,694.90x = 122,079,192,807.94
  5. Step 5: Solve for x
    x = 122,079,192,807.94/395,694.90
  6. Step 6: Final answer
    x = 308,518.49

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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.