Home / 279,000.55-385,050.83-158,128.85

Finding the Fourth Proportional to 279,000.55, 385,050.83 and 158,128.85

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Solution

The fourth proportional to 279,000.55, 385,050.83 and 158,128.85 is: 218,234.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,000.55 : 385,050.83 = 158,128.85 : x
  2. Step 2: Convert to fraction form
    279,000.55/385,050.83 = 158,128.85/x
  3. Step 3: Cross multiply
    279,000.55x = 385,050.83 × 158,128.85
  4. Step 4: Simplify right side
    279,000.55x = 60,887,646,297.39
  5. Step 5: Solve for x
    x = 60,887,646,297.39/279,000.55
  6. Step 6: Final answer
    x = 218,234.86

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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.