Home / 280,861.40-421,292.10-122,922.20

Finding the Fourth Proportional to 280,861.40, 421,292.10 and 122,922.20

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Solution

The fourth proportional to 280,861.40, 421,292.10 and 122,922.20 is: 184,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,861.40 : 421,292.10 = 122,922.20 : x
  2. Step 2: Convert to fraction form
    280,861.40/421,292.10 = 122,922.20/x
  3. Step 3: Cross multiply
    280,861.40x = 421,292.10 × 122,922.20
  4. Step 4: Simplify right side
    280,861.40x = 51,786,151,774.62
  5. Step 5: Solve for x
    x = 51,786,151,774.62/280,861.40
  6. Step 6: Final answer
    x = 184,383.30

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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.