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Finding the Fourth Proportional to 143,978.82, 215,973.30 and 38,800.32

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Solution

The fourth proportional to 143,978.82, 215,973.30 and 38,800.32 is: 58,201.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,978.82 : 215,973.30 = 38,800.32 : x
  2. Step 2: Convert to fraction form
    143,978.82/215,973.30 = 38,800.32/x
  3. Step 3: Cross multiply
    143,978.82x = 215,973.30 × 38,800.32
  4. Step 4: Simplify right side
    143,978.82x = 8,379,833,151.46
  5. Step 5: Solve for x
    x = 8,379,833,151.46/143,978.82
  6. Step 6: Final answer
    x = 58,201.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.