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Finding the Fourth Proportional to 143,395, 215,046.44 and 47,310.60

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Solution

The fourth proportional to 143,395, 215,046.44 and 47,310.60 is: 70,950.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,395 : 215,046.44 = 47,310.60 : x
  2. Step 2: Convert to fraction form
    143,395/215,046.44 = 47,310.60/x
  3. Step 3: Cross multiply
    143,395x = 215,046.44 × 47,310.60
  4. Step 4: Simplify right side
    143,395x = 10,173,976,104.26
  5. Step 5: Solve for x
    x = 10,173,976,104.26/143,395
  6. Step 6: Final answer
    x = 70,950.70

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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.