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Finding the Fourth Proportional to 404,068.28, 557,679.90 and 243,086

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Solution

The fourth proportional to 404,068.28, 557,679.90 and 243,086 is: 335,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,068.28 : 557,679.90 = 243,086 : x
  2. Step 2: Convert to fraction form
    404,068.28/557,679.90 = 243,086/x
  3. Step 3: Cross multiply
    404,068.28x = 557,679.90 × 243,086
  4. Step 4: Simplify right side
    404,068.28x = 135,564,176,171.40
  5. Step 5: Solve for x
    x = 135,564,176,171.40/404,068.28
  6. Step 6: Final answer
    x = 335,498.19

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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.