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Finding the Fourth Proportional to 280,608.30, 420,912.45 and 168,633.90

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Solution

The fourth proportional to 280,608.30, 420,912.45 and 168,633.90 is: 252,950.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,608.30 : 420,912.45 = 168,633.90 : x
  2. Step 2: Convert to fraction form
    280,608.30/420,912.45 = 168,633.90/x
  3. Step 3: Cross multiply
    280,608.30x = 420,912.45 × 168,633.90
  4. Step 4: Simplify right side
    280,608.30x = 70,980,108,002.06
  5. Step 5: Solve for x
    x = 70,980,108,002.06/280,608.30
  6. Step 6: Final answer
    x = 252,950.85

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1.5x scale

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.