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Finding the Fourth Proportional to 243,372.32, 335,820.60 and 135,928.64

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Solution

The fourth proportional to 243,372.32, 335,820.60 and 135,928.64 is: 187,562.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,372.32 : 335,820.60 = 135,928.64 : x
  2. Step 2: Convert to fraction form
    243,372.32/335,820.60 = 135,928.64/x
  3. Step 3: Cross multiply
    243,372.32x = 335,820.60 × 135,928.64
  4. Step 4: Simplify right side
    243,372.32x = 45,647,637,441.98
  5. Step 5: Solve for x
    x = 45,647,637,441.98/243,372.32
  6. Step 6: Final answer
    x = 187,562.98

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1.5x scale

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.