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Finding the Fourth Proportional to 425,489.90, 587,168.46 and 231,899.36

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Solution

The fourth proportional to 425,489.90, 587,168.46 and 231,899.36 is: 320,016.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,489.90 : 587,168.46 = 231,899.36 : x
  2. Step 2: Convert to fraction form
    425,489.90/587,168.46 = 231,899.36/x
  3. Step 3: Cross multiply
    425,489.90x = 587,168.46 × 231,899.36
  4. Step 4: Simplify right side
    425,489.90x = 136,163,990,086.19
  5. Step 5: Solve for x
    x = 136,163,990,086.19/425,489.90
  6. Step 6: Final answer
    x = 320,016.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.