Home / 278,997.55-385,046.73-158,125.87

Finding the Fourth Proportional to 278,997.55, 385,046.73 and 158,125.87

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Solution

The fourth proportional to 278,997.55, 385,046.73 and 158,125.87 is: 218,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,997.55 : 385,046.73 = 158,125.87 : x
  2. Step 2: Convert to fraction form
    278,997.55/385,046.73 = 158,125.87/x
  3. Step 3: Cross multiply
    278,997.55x = 385,046.73 × 158,125.87
  4. Step 4: Simplify right side
    278,997.55x = 60,885,849,653.21
  5. Step 5: Solve for x
    x = 60,885,849,653.21/278,997.55
  6. Step 6: Final answer
    x = 218,230.77

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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.