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Finding the Fourth Proportional to 203,379.96, 280,497.96 and 143,149.98

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Solution

The fourth proportional to 203,379.96, 280,497.96 and 143,149.98 is: 197,429.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,379.96 : 280,497.96 = 143,149.98 : x
  2. Step 2: Convert to fraction form
    203,379.96/280,497.96 = 143,149.98/x
  3. Step 3: Cross multiply
    203,379.96x = 280,497.96 × 143,149.98
  4. Step 4: Simplify right side
    203,379.96x = 40,153,277,364.04
  5. Step 5: Solve for x
    x = 40,153,277,364.04/203,379.96
  6. Step 6: Final answer
    x = 197,429.86

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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.