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Finding the Fourth Proportional to 215,313.66, 322,753.39 and 135,408.74

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Solution

The fourth proportional to 215,313.66, 322,753.39 and 135,408.74 is: 202,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,313.66 : 322,753.39 = 135,408.74 : x
  2. Step 2: Convert to fraction form
    215,313.66/322,753.39 = 135,408.74/x
  3. Step 3: Cross multiply
    215,313.66x = 322,753.39 × 135,408.74
  4. Step 4: Simplify right side
    215,313.66x = 43,703,627,664.45
  5. Step 5: Solve for x
    x = 43,703,627,664.45/215,313.66
  6. Step 6: Final answer
    x = 202,976.56

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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.