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Finding the Fourth Proportional to 425,422, 587,079.84 and 231,829.30

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Solution

The fourth proportional to 425,422, 587,079.84 and 231,829.30 is: 319,923.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,422 : 587,079.84 = 231,829.30 : x
  2. Step 2: Convert to fraction form
    425,422/587,079.84 = 231,829.30/x
  3. Step 3: Cross multiply
    425,422x = 587,079.84 × 231,829.30
  4. Step 4: Simplify right side
    425,422x = 136,102,308,351.31
  5. Step 5: Solve for x
    x = 136,102,308,351.31/425,422
  6. Step 6: Final answer
    x = 319,923.06

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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.