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Finding the Fourth Proportional to 143,285.70, 214,930.35 and 43,446.90

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Solution

The fourth proportional to 143,285.70, 214,930.35 and 43,446.90 is: 65,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,285.70 : 214,930.35 = 43,446.90 : x
  2. Step 2: Convert to fraction form
    143,285.70/214,930.35 = 43,446.90/x
  3. Step 3: Cross multiply
    143,285.70x = 214,930.35 × 43,446.90
  4. Step 4: Simplify right side
    143,285.70x = 9,338,057,423.42
  5. Step 5: Solve for x
    x = 9,338,057,423.42/143,285.70
  6. Step 6: Final answer
    x = 65,170.90

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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.