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Finding the Fourth Proportional to 285,625.80, 428,244.30 and 135,937.80

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Solution

The fourth proportional to 285,625.80, 428,244.30 and 135,937.80 is: 203,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,625.80 : 428,244.30 = 135,937.80 : x
  2. Step 2: Convert to fraction form
    285,625.80/428,244.30 = 135,937.80/x
  3. Step 3: Cross multiply
    285,625.80x = 428,244.30 × 135,937.80
  4. Step 4: Simplify right side
    285,625.80x = 58,214,588,004.54
  5. Step 5: Solve for x
    x = 58,214,588,004.54/285,625.80
  6. Step 6: Final answer
    x = 203,814.18

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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.