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Finding the Fourth Proportional to 403,997.88, 557,515.64 and 234,328.80

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Solution

The fourth proportional to 403,997.88, 557,515.64 and 234,328.80 is: 323,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,997.88 : 557,515.64 = 234,328.80 : x
  2. Step 2: Convert to fraction form
    403,997.88/557,515.64 = 234,328.80/x
  3. Step 3: Cross multiply
    403,997.88x = 557,515.64 × 234,328.80
  4. Step 4: Simplify right side
    403,997.88x = 130,641,970,902.43
  5. Step 5: Solve for x
    x = 130,641,970,902.43/403,997.88
  6. Step 6: Final answer
    x = 323,372.91

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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.