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Finding the Fourth Proportional to 215,408.40, 322,529.40 and 168,752.40

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Solution

The fourth proportional to 215,408.40, 322,529.40 and 168,752.40 is: 252,671.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,408.40 : 322,529.40 = 168,752.40 : x
  2. Step 2: Convert to fraction form
    215,408.40/322,529.40 = 168,752.40/x
  3. Step 3: Cross multiply
    215,408.40x = 322,529.40 × 168,752.40
  4. Step 4: Simplify right side
    215,408.40x = 54,427,610,320.56
  5. Step 5: Solve for x
    x = 54,427,610,320.56/215,408.40
  6. Step 6: Final answer
    x = 252,671.72

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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.