Home / 280,583.62-421,043.10-103,108.57

Finding the Fourth Proportional to 280,583.62, 421,043.10 and 103,108.57

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Solution

The fourth proportional to 280,583.62, 421,043.10 and 103,108.57 is: 154,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,583.62 : 421,043.10 = 103,108.57 : x
  2. Step 2: Convert to fraction form
    280,583.62/421,043.10 = 103,108.57/x
  3. Step 3: Cross multiply
    280,583.62x = 421,043.10 × 103,108.57
  4. Step 4: Simplify right side
    280,583.62x = 43,413,151,949.37
  5. Step 5: Solve for x
    x = 43,413,151,949.37/280,583.62
  6. Step 6: Final answer
    x = 154,724.47

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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.