Home / 280,790.16-421,263.72-162,245.04

Finding the Fourth Proportional to 280,790.16, 421,263.72 and 162,245.04

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Solution

The fourth proportional to 280,790.16, 421,263.72 and 162,245.04 is: 243,412.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,790.16 : 421,263.72 = 162,245.04 : x
  2. Step 2: Convert to fraction form
    280,790.16/421,263.72 = 162,245.04/x
  3. Step 3: Cross multiply
    280,790.16x = 421,263.72 × 162,245.04
  4. Step 4: Simplify right side
    280,790.16x = 68,347,949,101.95
  5. Step 5: Solve for x
    x = 68,347,949,101.95/280,790.16
  6. Step 6: Final answer
    x = 243,412.91

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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.