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Finding the Fourth Proportional to 283,604.20, 425,406.30 and 115,205.20

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Solution

The fourth proportional to 283,604.20, 425,406.30 and 115,205.20 is: 172,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,604.20 : 425,406.30 = 115,205.20 : x
  2. Step 2: Convert to fraction form
    283,604.20/425,406.30 = 115,205.20/x
  3. Step 3: Cross multiply
    283,604.20x = 425,406.30 × 115,205.20
  4. Step 4: Simplify right side
    283,604.20x = 49,009,017,872.76
  5. Step 5: Solve for x
    x = 49,009,017,872.76/283,604.20
  6. Step 6: Final answer
    x = 172,807.80

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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.