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Finding the Fourth Proportional to 243,266.50, 335,667.72 and 135,819.28

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Solution

The fourth proportional to 243,266.50, 335,667.72 and 135,819.28 is: 187,408.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,266.50 : 335,667.72 = 135,819.28 : x
  2. Step 2: Convert to fraction form
    243,266.50/335,667.72 = 135,819.28/x
  3. Step 3: Cross multiply
    243,266.50x = 335,667.72 × 135,819.28
  4. Step 4: Simplify right side
    243,266.50x = 45,590,148,049.64
  5. Step 5: Solve for x
    x = 45,590,148,049.64/243,266.50
  6. Step 6: Final answer
    x = 187,408.25

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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.