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Finding the Fourth Proportional to 283,781.72, 425,713.90 and 84,076.22

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Solution

The fourth proportional to 283,781.72, 425,713.90 and 84,076.22 is: 126,126.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,781.72 : 425,713.90 = 84,076.22 : x
  2. Step 2: Convert to fraction form
    283,781.72/425,713.90 = 84,076.22/x
  3. Step 3: Cross multiply
    283,781.72x = 425,713.90 × 84,076.22
  4. Step 4: Simplify right side
    283,781.72x = 35,792,415,513.46
  5. Step 5: Solve for x
    x = 35,792,415,513.46/283,781.72
  6. Step 6: Final answer
    x = 126,126.57

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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.