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Finding the Fourth Proportional to 539,969.37, 810,000.57 and 140,610.87

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Solution

The fourth proportional to 539,969.37, 810,000.57 and 140,610.87 is: 210,928.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,969.37 : 810,000.57 = 140,610.87 : x
  2. Step 2: Convert to fraction form
    539,969.37/810,000.57 = 140,610.87/x
  3. Step 3: Cross multiply
    539,969.37x = 810,000.57 × 140,610.87
  4. Step 4: Simplify right side
    539,969.37x = 113,894,882,120.14
  5. Step 5: Solve for x
    x = 113,894,882,120.14/539,969.37
  6. Step 6: Final answer
    x = 210,928.41

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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.