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Finding the Fourth Proportional to 275,857.80, 380,642.94 and 159,567.72

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Solution

The fourth proportional to 275,857.80, 380,642.94 and 159,567.72 is: 220,179.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,857.80 : 380,642.94 = 159,567.72 : x
  2. Step 2: Convert to fraction form
    275,857.80/380,642.94 = 159,567.72/x
  3. Step 3: Cross multiply
    275,857.80x = 380,642.94 × 159,567.72
  4. Step 4: Simplify right side
    275,857.80x = 60,738,326,069.90
  5. Step 5: Solve for x
    x = 60,738,326,069.90/275,857.80
  6. Step 6: Final answer
    x = 220,179.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.