Home / 279,453.11-418,899.36-129,798.50

Finding the Fourth Proportional to 279,453.11, 418,899.36 and 129,798.50

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Solution

The fourth proportional to 279,453.11, 418,899.36 and 129,798.50 is: 194,567.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,453.11 : 418,899.36 = 129,798.50 : x
  2. Step 2: Convert to fraction form
    279,453.11/418,899.36 = 129,798.50/x
  3. Step 3: Cross multiply
    279,453.11x = 418,899.36 × 129,798.50
  4. Step 4: Simplify right side
    279,453.11x = 54,372,509,327.52
  5. Step 5: Solve for x
    x = 54,372,509,327.52/279,453.11
  6. Step 6: Final answer
    x = 194,567.56

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1.5x scale

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.