Home / 353,860.20-531,009-143,499.96

Finding the Fourth Proportional to 353,860.20, 531,009 and 143,499.96

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Solution

The fourth proportional to 353,860.20, 531,009 and 143,499.96 is: 215,338.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,860.20 : 531,009 = 143,499.96 : x
  2. Step 2: Convert to fraction form
    353,860.20/531,009 = 143,499.96/x
  3. Step 3: Cross multiply
    353,860.20x = 531,009 × 143,499.96
  4. Step 4: Simplify right side
    353,860.20x = 76,199,770,259.64
  5. Step 5: Solve for x
    x = 76,199,770,259.64/353,860.20
  6. Step 6: Final answer
    x = 215,338.63

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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.