Home / 280,924.12-421,386.18-123,187.96

Finding the Fourth Proportional to 280,924.12, 421,386.18 and 123,187.96

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Solution

The fourth proportional to 280,924.12, 421,386.18 and 123,187.96 is: 184,781.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,924.12 : 421,386.18 = 123,187.96 : x
  2. Step 2: Convert to fraction form
    280,924.12/421,386.18 = 123,187.96/x
  3. Step 3: Cross multiply
    280,924.12x = 421,386.18 × 123,187.96
  4. Step 4: Simplify right side
    280,924.12x = 51,909,703,886.39
  5. Step 5: Solve for x
    x = 51,909,703,886.39/280,924.12
  6. Step 6: Final answer
    x = 184,781.94

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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.