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Finding the Fourth Proportional to 143,459.34, 215,201.06 and 43,620.41

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Solution

The fourth proportional to 143,459.34, 215,201.06 and 43,620.41 is: 65,434.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,459.34 : 215,201.06 = 43,620.41 : x
  2. Step 2: Convert to fraction form
    143,459.34/215,201.06 = 43,620.41/x
  3. Step 3: Cross multiply
    143,459.34x = 215,201.06 × 43,620.41
  4. Step 4: Simplify right side
    143,459.34x = 9,387,157,175.53
  5. Step 5: Solve for x
    x = 9,387,157,175.53/143,459.34
  6. Step 6: Final answer
    x = 65,434.27

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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.