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Finding the Fourth Proportional to 425,823.21, 587,639.75 and 234,843.21

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Solution

The fourth proportional to 425,823.21, 587,639.75 and 234,843.21 is: 324,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,823.21 : 587,639.75 = 234,843.21 : x
  2. Step 2: Convert to fraction form
    425,823.21/587,639.75 = 234,843.21/x
  3. Step 3: Cross multiply
    425,823.21x = 587,639.75 × 234,843.21
  4. Step 4: Simplify right side
    425,823.21x = 138,003,204,039.38
  5. Step 5: Solve for x
    x = 138,003,204,039.38/425,823.21
  6. Step 6: Final answer
    x = 324,085.68

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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.