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Finding the Fourth Proportional to 436,990.73, 603,037.94 and 243,397.85

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Solution

The fourth proportional to 436,990.73, 603,037.94 and 243,397.85 is: 335,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,990.73 : 603,037.94 = 243,397.85 : x
  2. Step 2: Convert to fraction form
    436,990.73/603,037.94 = 243,397.85/x
  3. Step 3: Cross multiply
    436,990.73x = 603,037.94 × 243,397.85
  4. Step 4: Simplify right side
    436,990.73x = 146,778,133,832.25
  5. Step 5: Solve for x
    x = 146,778,133,832.25/436,990.73
  6. Step 6: Final answer
    x = 335,883.87

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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.