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Finding the Fourth Proportional to 425,431.80, 587,084.22 and 231,835.32

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Solution

The fourth proportional to 425,431.80, 587,084.22 and 231,835.32 is: 319,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,431.80 : 587,084.22 = 231,835.32 : x
  2. Step 2: Convert to fraction form
    425,431.80/587,084.22 = 231,835.32/x
  3. Step 3: Cross multiply
    425,431.80x = 587,084.22 × 231,835.32
  4. Step 4: Simplify right side
    425,431.80x = 136,106,858,010.65
  5. Step 5: Solve for x
    x = 136,106,858,010.65/425,431.80
  6. Step 6: Final answer
    x = 319,926.39

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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.