Home / 280,288.36-420,182.49-102,753.92

Finding the Fourth Proportional to 280,288.36, 420,182.49 and 102,753.92

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Solution

The fourth proportional to 280,288.36, 420,182.49 and 102,753.92 is: 154,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,288.36 : 420,182.49 = 102,753.92 : x
  2. Step 2: Convert to fraction form
    280,288.36/420,182.49 = 102,753.92/x
  3. Step 3: Cross multiply
    280,288.36x = 420,182.49 × 102,753.92
  4. Step 4: Simplify right side
    280,288.36x = 43,175,397,962.86
  5. Step 5: Solve for x
    x = 43,175,397,962.86/280,288.36
  6. Step 6: Final answer
    x = 154,039.21

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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.