Home / 280,923.12-421,384.68-123,186.96

Finding the Fourth Proportional to 280,923.12, 421,384.68 and 123,186.96

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Solution

The fourth proportional to 280,923.12, 421,384.68 and 123,186.96 is: 184,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,923.12 : 421,384.68 = 123,186.96 : x
  2. Step 2: Convert to fraction form
    280,923.12/421,384.68 = 123,186.96/x
  3. Step 3: Cross multiply
    280,923.12x = 421,384.68 × 123,186.96
  4. Step 4: Simplify right side
    280,923.12x = 51,909,097,719.77
  5. Step 5: Solve for x
    x = 51,909,097,719.77/280,923.12
  6. Step 6: Final answer
    x = 184,780.44

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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.