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Finding the Fourth Proportional to 368,694.01, 508,955 and 247,905.31

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Solution

The fourth proportional to 368,694.01, 508,955 and 247,905.31 is: 342,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,694.01 : 508,955 = 247,905.31 : x
  2. Step 2: Convert to fraction form
    368,694.01/508,955 = 247,905.31/x
  3. Step 3: Cross multiply
    368,694.01x = 508,955 × 247,905.31
  4. Step 4: Simplify right side
    368,694.01x = 126,172,647,051.05
  5. Step 5: Solve for x
    x = 126,172,647,051.05/368,694.01
  6. Step 6: Final answer
    x = 342,215.07

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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.