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Finding the Fourth Proportional to 539,636.58, 809,313.93 and 160,455.21

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Solution

The fourth proportional to 539,636.58, 809,313.93 and 160,455.21 is: 240,640.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,636.58 : 809,313.93 = 160,455.21 : x
  2. Step 2: Convert to fraction form
    539,636.58/809,313.93 = 160,455.21/x
  3. Step 3: Cross multiply
    539,636.58x = 809,313.93 × 160,455.21
  4. Step 4: Simplify right side
    539,636.58x = 129,858,636,594.08
  5. Step 5: Solve for x
    x = 129,858,636,594.08/539,636.58
  6. Step 6: Final answer
    x = 240,640.91

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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.