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Finding the Fourth Proportional to 427,791.29, 642,317.73 and 238,621.25

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Solution

The fourth proportional to 427,791.29, 642,317.73 and 238,621.25 is: 358,283.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,791.29 : 642,317.73 = 238,621.25 : x
  2. Step 2: Convert to fraction form
    427,791.29/642,317.73 = 238,621.25/x
  3. Step 3: Cross multiply
    427,791.29x = 642,317.73 × 238,621.25
  4. Step 4: Simplify right side
    427,791.29x = 153,270,661,235.56
  5. Step 5: Solve for x
    x = 153,270,661,235.56/427,791.29
  6. Step 6: Final answer
    x = 358,283.74

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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.