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Finding the Fourth Proportional to 280,722.78, 387,361.44 and 159,847.29

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Solution

The fourth proportional to 280,722.78, 387,361.44 and 159,847.29 is: 220,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,722.78 : 387,361.44 = 159,847.29 : x
  2. Step 2: Convert to fraction form
    280,722.78/387,361.44 = 159,847.29/x
  3. Step 3: Cross multiply
    280,722.78x = 387,361.44 × 159,847.29
  4. Step 4: Simplify right side
    280,722.78x = 61,918,676,434.50
  5. Step 5: Solve for x
    x = 61,918,676,434.50/280,722.78
  6. Step 6: Final answer
    x = 220,568.76

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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.