Home / 280,935.78-421,404.03-114,723.78

Finding the Fourth Proportional to 280,935.78, 421,404.03 and 114,723.78

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Solution

The fourth proportional to 280,935.78, 421,404.03 and 114,723.78 is: 172,085.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,935.78 : 421,404.03 = 114,723.78 : x
  2. Step 2: Convert to fraction form
    280,935.78/421,404.03 = 114,723.78/x
  3. Step 3: Cross multiply
    280,935.78x = 421,404.03 × 114,723.78
  4. Step 4: Simplify right side
    280,935.78x = 48,345,063,228.83
  5. Step 5: Solve for x
    x = 48,345,063,228.83/280,935.78
  6. Step 6: Final answer
    x = 172,085.82

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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.