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Finding the Fourth Proportional to 283,619.80, 425,429.70 and 276,621.40

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Solution

The fourth proportional to 283,619.80, 425,429.70 and 276,621.40 is: 414,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,619.80 : 425,429.70 = 276,621.40 : x
  2. Step 2: Convert to fraction form
    283,619.80/425,429.70 = 276,621.40/x
  3. Step 3: Cross multiply
    283,619.80x = 425,429.70 × 276,621.40
  4. Step 4: Simplify right side
    283,619.80x = 117,682,959,215.58
  5. Step 5: Solve for x
    x = 117,682,959,215.58/283,619.80
  6. Step 6: Final answer
    x = 414,932.10

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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.