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Finding the Fourth Proportional to 395,956.38, 546,378.89 and 243,001.01

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Solution

The fourth proportional to 395,956.38, 546,378.89 and 243,001.01 is: 335,316.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,956.38 : 546,378.89 = 243,001.01 : x
  2. Step 2: Convert to fraction form
    395,956.38/546,378.89 = 243,001.01/x
  3. Step 3: Cross multiply
    395,956.38x = 546,378.89 × 243,001.01
  4. Step 4: Simplify right side
    395,956.38x = 132,770,622,263.62
  5. Step 5: Solve for x
    x = 132,770,622,263.62/395,956.38
  6. Step 6: Final answer
    x = 335,316.28

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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.