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Finding the Fourth Proportional to 283,617.80, 425,426.70 and 276,619.40

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Solution

The fourth proportional to 283,617.80, 425,426.70 and 276,619.40 is: 414,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,617.80 : 425,426.70 = 276,619.40 : x
  2. Step 2: Convert to fraction form
    283,617.80/425,426.70 = 276,619.40/x
  3. Step 3: Cross multiply
    283,617.80x = 425,426.70 × 276,619.40
  4. Step 4: Simplify right side
    283,617.80x = 117,681,278,497.98
  5. Step 5: Solve for x
    x = 117,681,278,497.98/283,617.80
  6. Step 6: Final answer
    x = 414,929.10

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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.