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Finding the Fourth Proportional to 539,485.60, 809,336.40 and 160,405.60

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Solution

The fourth proportional to 539,485.60, 809,336.40 and 160,405.60 is: 240,640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,485.60 : 809,336.40 = 160,405.60 : x
  2. Step 2: Convert to fraction form
    539,485.60/809,336.40 = 160,405.60/x
  3. Step 3: Cross multiply
    539,485.60x = 809,336.40 × 160,405.60
  4. Step 4: Simplify right side
    539,485.60x = 129,822,090,843.84
  5. Step 5: Solve for x
    x = 129,822,090,843.84/539,485.60
  6. Step 6: Final answer
    x = 240,640.51

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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.