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Finding the Fourth Proportional to 242,991.70, 335,327.48 and 135,561.82

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Solution

The fourth proportional to 242,991.70, 335,327.48 and 135,561.82 is: 187,074.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,991.70 : 335,327.48 = 135,561.82 : x
  2. Step 2: Convert to fraction form
    242,991.70/335,327.48 = 135,561.82/x
  3. Step 3: Cross multiply
    242,991.70x = 335,327.48 × 135,561.82
  4. Step 4: Simplify right side
    242,991.70x = 45,457,603,484.81
  5. Step 5: Solve for x
    x = 45,457,603,484.81/242,991.70
  6. Step 6: Final answer
    x = 187,074.72

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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.