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Finding the Fourth Proportional to 243,398.72, 335,866.08 and 135,966.44

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Solution

The fourth proportional to 243,398.72, 335,866.08 and 135,966.44 is: 187,620.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,398.72 : 335,866.08 = 135,966.44 : x
  2. Step 2: Convert to fraction form
    243,398.72/335,866.08 = 135,966.44/x
  3. Step 3: Cross multiply
    243,398.72x = 335,866.08 × 135,966.44
  4. Step 4: Simplify right side
    243,398.72x = 45,666,515,214.36
  5. Step 5: Solve for x
    x = 45,666,515,214.36/243,398.72
  6. Step 6: Final answer
    x = 187,620.19

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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.