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Finding the Fourth Proportional to 402,998.39, 603,999.32 and 203,375.87

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Solution

The fourth proportional to 402,998.39, 603,999.32 and 203,375.87 is: 304,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,998.39 : 603,999.32 = 203,375.87 : x
  2. Step 2: Convert to fraction form
    402,998.39/603,999.32 = 203,375.87/x
  3. Step 3: Cross multiply
    402,998.39x = 603,999.32 × 203,375.87
  4. Step 4: Simplify right side
    402,998.39x = 122,838,883,147.53
  5. Step 5: Solve for x
    x = 122,838,883,147.53/402,998.39
  6. Step 6: Final answer
    x = 304,812.35

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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.