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Finding the Fourth Proportional to 400,974.81, 601,377.31 and 238,940.58

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Solution

The fourth proportional to 400,974.81, 601,377.31 and 238,940.58 is: 358,360.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,974.81 : 601,377.31 = 238,940.58 : x
  2. Step 2: Convert to fraction form
    400,974.81/601,377.31 = 238,940.58/x
  3. Step 3: Cross multiply
    400,974.81x = 601,377.31 × 238,940.58
  4. Step 4: Simplify right side
    400,974.81x = 143,693,445,804.08
  5. Step 5: Solve for x
    x = 143,693,445,804.08/400,974.81
  6. Step 6: Final answer
    x = 358,360.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.