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Finding the Fourth Proportional to 403,941.72, 557,440.68 and 242,889

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Solution

The fourth proportional to 403,941.72, 557,440.68 and 242,889 is: 335,187.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,941.72 : 557,440.68 = 242,889 : x
  2. Step 2: Convert to fraction form
    403,941.72/557,440.68 = 242,889/x
  3. Step 3: Cross multiply
    403,941.72x = 557,440.68 × 242,889
  4. Step 4: Simplify right side
    403,941.72x = 135,396,209,324.52
  5. Step 5: Solve for x
    x = 135,396,209,324.52/403,941.72
  6. Step 6: Final answer
    x = 335,187.49

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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.