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Finding the Fourth Proportional to 283,676.80, 425,612.40 and 126,018.40

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Solution

The fourth proportional to 283,676.80, 425,612.40 and 126,018.40 is: 189,070.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,676.80 : 425,612.40 = 126,018.40 : x
  2. Step 2: Convert to fraction form
    283,676.80/425,612.40 = 126,018.40/x
  3. Step 3: Cross multiply
    283,676.80x = 425,612.40 × 126,018.40
  4. Step 4: Simplify right side
    283,676.80x = 53,634,993,668.16
  5. Step 5: Solve for x
    x = 53,634,993,668.16/283,676.80
  6. Step 6: Final answer
    x = 189,070.78

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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.