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Finding the Fourth Proportional to 354,303, 488,957.58 and 203,409.72

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Solution

The fourth proportional to 354,303, 488,957.58 and 203,409.72 is: 280,716.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,303 : 488,957.58 = 203,409.72 : x
  2. Step 2: Convert to fraction form
    354,303/488,957.58 = 203,409.72/x
  3. Step 3: Cross multiply
    354,303x = 488,957.58 × 203,409.72
  4. Step 4: Simplify right side
    354,303x = 99,458,724,439.68
  5. Step 5: Solve for x
    x = 99,458,724,439.68/354,303
  6. Step 6: Final answer
    x = 280,716.57

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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.