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Finding the Fourth Proportional to 215,853.70, 323,780.55 and 180,861.70

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Solution

The fourth proportional to 215,853.70, 323,780.55 and 180,861.70 is: 271,292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,853.70 : 323,780.55 = 180,861.70 : x
  2. Step 2: Convert to fraction form
    215,853.70/323,780.55 = 180,861.70/x
  3. Step 3: Cross multiply
    215,853.70x = 323,780.55 × 180,861.70
  4. Step 4: Simplify right side
    215,853.70x = 58,559,500,699.94
  5. Step 5: Solve for x
    x = 58,559,500,699.94/215,853.70
  6. Step 6: Final answer
    x = 271,292.55

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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.