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Finding the Fourth Proportional to 243,383.79, 335,869.61 and 135,953.82

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Solution

The fourth proportional to 243,383.79, 335,869.61 and 135,953.82 is: 187,616.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,383.79 : 335,869.61 = 135,953.82 : x
  2. Step 2: Convert to fraction form
    243,383.79/335,869.61 = 135,953.82/x
  3. Step 3: Cross multiply
    243,383.79x = 335,869.61 × 135,953.82
  4. Step 4: Simplify right side
    243,383.79x = 45,662,758,270.75
  5. Step 5: Solve for x
    x = 45,662,758,270.75/243,383.79
  6. Step 6: Final answer
    x = 187,616.27

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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.