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Finding the Fourth Proportional to 539,856.80, 809,804.40 and 165,879.20

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Solution

The fourth proportional to 539,856.80, 809,804.40 and 165,879.20 is: 248,824.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,856.80 : 809,804.40 = 165,879.20 : x
  2. Step 2: Convert to fraction form
    539,856.80/809,804.40 = 165,879.20/x
  3. Step 3: Cross multiply
    539,856.80x = 809,804.40 × 165,879.20
  4. Step 4: Simplify right side
    539,856.80x = 134,329,706,028.48
  5. Step 5: Solve for x
    x = 134,329,706,028.48/539,856.80
  6. Step 6: Final answer
    x = 248,824.70

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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.