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Finding the Fourth Proportional to 279,598.88, 419,399.06 and 129,820.16

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Solution

The fourth proportional to 279,598.88, 419,399.06 and 129,820.16 is: 194,730.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,598.88 : 419,399.06 = 129,820.16 : x
  2. Step 2: Convert to fraction form
    279,598.88/419,399.06 = 129,820.16/x
  3. Step 3: Cross multiply
    279,598.88x = 419,399.06 × 129,820.16
  4. Step 4: Simplify right side
    279,598.88x = 54,446,453,073.05
  5. Step 5: Solve for x
    x = 54,446,453,073.05/279,598.88
  6. Step 6: Final answer
    x = 194,730.58

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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.