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Finding the Fourth Proportional to 543,346.65, 814,983.53 and 143,978.85

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Solution

The fourth proportional to 543,346.65, 814,983.53 and 143,978.85 is: 215,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,346.65 : 814,983.53 = 143,978.85 : x
  2. Step 2: Convert to fraction form
    543,346.65/814,983.53 = 143,978.85/x
  3. Step 3: Cross multiply
    543,346.65x = 814,983.53 × 143,978.85
  4. Step 4: Simplify right side
    543,346.65x = 117,340,390,698.45
  5. Step 5: Solve for x
    x = 117,340,390,698.45/543,346.65
  6. Step 6: Final answer
    x = 215,958.62

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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.