Home / 280,657.10-387,254.04-159,791.06

Finding the Fourth Proportional to 280,657.10, 387,254.04 and 159,791.06

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Solution

The fourth proportional to 280,657.10, 387,254.04 and 159,791.06 is: 220,481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,657.10 : 387,254.04 = 159,791.06 : x
  2. Step 2: Convert to fraction form
    280,657.10/387,254.04 = 159,791.06/x
  3. Step 3: Cross multiply
    280,657.10x = 387,254.04 × 159,791.06
  4. Step 4: Simplify right side
    280,657.10x = 61,879,733,540.88
  5. Step 5: Solve for x
    x = 61,879,733,540.88/280,657.10
  6. Step 6: Final answer
    x = 220,481.63

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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.