Home / 280,925.12-421,387.68-123,188.96

Finding the Fourth Proportional to 280,925.12, 421,387.68 and 123,188.96

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Solution

The fourth proportional to 280,925.12, 421,387.68 and 123,188.96 is: 184,783.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,925.12 : 421,387.68 = 123,188.96 : x
  2. Step 2: Convert to fraction form
    280,925.12/421,387.68 = 123,188.96/x
  3. Step 3: Cross multiply
    280,925.12x = 421,387.68 × 123,188.96
  4. Step 4: Simplify right side
    280,925.12x = 51,910,310,056.01
  5. Step 5: Solve for x
    x = 51,910,310,056.01/280,925.12
  6. Step 6: Final answer
    x = 184,783.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.