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Finding the Fourth Proportional to 283,809.49, 425,712.21 and 84,130.72

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Solution

The fourth proportional to 283,809.49, 425,712.21 and 84,130.72 is: 126,195.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,809.49 : 425,712.21 = 84,130.72 : x
  2. Step 2: Convert to fraction form
    283,809.49/425,712.21 = 84,130.72/x
  3. Step 3: Cross multiply
    283,809.49x = 425,712.21 × 84,130.72
  4. Step 4: Simplify right side
    283,809.49x = 35,815,474,740.09
  5. Step 5: Solve for x
    x = 35,815,474,740.09/283,809.49
  6. Step 6: Final answer
    x = 126,195.48

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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.