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Finding the Fourth Proportional to 287,241.84, 396,409.44 and 159,914.64

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Solution

The fourth proportional to 287,241.84, 396,409.44 and 159,914.64 is: 220,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,241.84 : 396,409.44 = 159,914.64 : x
  2. Step 2: Convert to fraction form
    287,241.84/396,409.44 = 159,914.64/x
  3. Step 3: Cross multiply
    287,241.84x = 396,409.44 × 159,914.64
  4. Step 4: Simplify right side
    287,241.84x = 63,391,672,890.20
  5. Step 5: Solve for x
    x = 63,391,672,890.20/287,241.84
  6. Step 6: Final answer
    x = 220,690.94

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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.