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Finding the Fourth Proportional to 219,791.76, 303,319.80 and 143,360.88

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Solution

The fourth proportional to 219,791.76, 303,319.80 and 143,360.88 is: 197,842.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,791.76 : 303,319.80 = 143,360.88 : x
  2. Step 2: Convert to fraction form
    219,791.76/303,319.80 = 143,360.88/x
  3. Step 3: Cross multiply
    219,791.76x = 303,319.80 × 143,360.88
  4. Step 4: Simplify right side
    219,791.76x = 43,484,193,449.42
  5. Step 5: Solve for x
    x = 43,484,193,449.42/219,791.76
  6. Step 6: Final answer
    x = 197,842.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.