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Finding the Fourth Proportional to 395,349.91, 545,583.13 and 214,061.96

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Solution

The fourth proportional to 395,349.91, 545,583.13 and 214,061.96 is: 295,405.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,349.91 : 545,583.13 = 214,061.96 : x
  2. Step 2: Convert to fraction form
    395,349.91/545,583.13 = 214,061.96/x
  3. Step 3: Cross multiply
    395,349.91x = 545,583.13 × 214,061.96
  4. Step 4: Simplify right side
    395,349.91x = 116,788,594,979.54
  5. Step 5: Solve for x
    x = 116,788,594,979.54/395,349.91
  6. Step 6: Final answer
    x = 295,405.65

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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.