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Finding the Fourth Proportional to 280,193.84, 386,690.40 and 159,372.92

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Solution

The fourth proportional to 280,193.84, 386,690.40 and 159,372.92 is: 219,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,193.84 : 386,690.40 = 159,372.92 : x
  2. Step 2: Convert to fraction form
    280,193.84/386,690.40 = 159,372.92/x
  3. Step 3: Cross multiply
    280,193.84x = 386,690.40 × 159,372.92
  4. Step 4: Simplify right side
    280,193.84x = 61,627,978,183.97
  5. Step 5: Solve for x
    x = 61,627,978,183.97/280,193.84
  6. Step 6: Final answer
    x = 219,947.66

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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.