Home / 280,758.15-421,091.07-100,806.32

Finding the Fourth Proportional to 280,758.15, 421,091.07 and 100,806.32

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Solution

The fourth proportional to 280,758.15, 421,091.07 and 100,806.32 is: 151,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,758.15 : 421,091.07 = 100,806.32 : x
  2. Step 2: Convert to fraction form
    280,758.15/421,091.07 = 100,806.32/x
  3. Step 3: Cross multiply
    280,758.15x = 421,091.07 × 100,806.32
  4. Step 4: Simplify right side
    280,758.15x = 42,448,639,046.11
  5. Step 5: Solve for x
    x = 42,448,639,046.11/280,758.15
  6. Step 6: Final answer
    x = 151,192.90

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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.