Home / 280,575.20-421,046.94-103,083.68

Finding the Fourth Proportional to 280,575.20, 421,046.94 and 103,083.68

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Solution

The fourth proportional to 280,575.20, 421,046.94 and 103,083.68 is: 154,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,575.20 : 421,046.94 = 103,083.68 : x
  2. Step 2: Convert to fraction form
    280,575.20/421,046.94 = 103,083.68/x
  3. Step 3: Cross multiply
    280,575.20x = 421,046.94 × 103,083.68
  4. Step 4: Simplify right side
    280,575.20x = 43,403,068,027.94
  5. Step 5: Solve for x
    x = 43,403,068,027.94/280,575.20
  6. Step 6: Final answer
    x = 154,693.17

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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.