Home / 279,000.29-385,050.50-158,128.60

Finding the Fourth Proportional to 279,000.29, 385,050.50 and 158,128.60

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Solution

The fourth proportional to 279,000.29, 385,050.50 and 158,128.60 is: 218,234.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,000.29 : 385,050.50 = 158,128.60 : x
  2. Step 2: Convert to fraction form
    279,000.29/385,050.50 = 158,128.60/x
  3. Step 3: Cross multiply
    279,000.29x = 385,050.50 × 158,128.60
  4. Step 4: Simplify right side
    279,000.29x = 60,887,496,494.30
  5. Step 5: Solve for x
    x = 60,887,496,494.30/279,000.29
  6. Step 6: Final answer
    x = 218,234.53

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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.