Home / 280,535.12-387,138.90-159,676.41

Finding the Fourth Proportional to 280,535.12, 387,138.90 and 159,676.41

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Solution

The fourth proportional to 280,535.12, 387,138.90 and 159,676.41 is: 220,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,535.12 : 387,138.90 = 159,676.41 : x
  2. Step 2: Convert to fraction form
    280,535.12/387,138.90 = 159,676.41/x
  3. Step 3: Cross multiply
    280,535.12x = 387,138.90 × 159,676.41
  4. Step 4: Simplify right side
    280,535.12x = 61,816,949,723.35
  5. Step 5: Solve for x
    x = 61,816,949,723.35/280,535.12
  6. Step 6: Final answer
    x = 220,353.69

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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.