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Finding the Fourth Proportional to 539,969.56, 809,943.40 and 140,601.49

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Solution

The fourth proportional to 539,969.56, 809,943.40 and 140,601.49 is: 210,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,969.56 : 809,943.40 = 140,601.49 : x
  2. Step 2: Convert to fraction form
    539,969.56/809,943.40 = 140,601.49/x
  3. Step 3: Cross multiply
    539,969.56x = 809,943.40 × 140,601.49
  4. Step 4: Simplify right side
    539,969.56x = 113,879,248,855.67
  5. Step 5: Solve for x
    x = 113,879,248,855.67/539,969.56
  6. Step 6: Final answer
    x = 210,899.39

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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.