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Finding the Fourth Proportional to 215,314.48, 322,754.60 and 135,409.55

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Solution

The fourth proportional to 215,314.48, 322,754.60 and 135,409.55 is: 202,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,314.48 : 322,754.60 = 135,409.55 : x
  2. Step 2: Convert to fraction form
    215,314.48/322,754.60 = 135,409.55/x
  3. Step 3: Cross multiply
    215,314.48x = 322,754.60 × 135,409.55
  4. Step 4: Simplify right side
    215,314.48x = 43,704,054,678.07
  5. Step 5: Solve for x
    x = 43,704,054,678.07/215,314.48
  6. Step 6: Final answer
    x = 202,977.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.