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Finding the Fourth Proportional to 280,460.83, 386,839.56 and 189,776.88

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Solution

The fourth proportional to 280,460.83, 386,839.56 and 189,776.88 is: 261,759.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,460.83 : 386,839.56 = 189,776.88 : x
  2. Step 2: Convert to fraction form
    280,460.83/386,839.56 = 189,776.88/x
  3. Step 3: Cross multiply
    280,460.83x = 386,839.56 × 189,776.88
  4. Step 4: Simplify right side
    280,460.83x = 73,413,204,757.37
  5. Step 5: Solve for x
    x = 73,413,204,757.37/280,460.83
  6. Step 6: Final answer
    x = 261,759.21

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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.