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Finding the Fourth Proportional to 280,908.77, 421,317.02 and 120,941.63

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Solution

The fourth proportional to 280,908.77, 421,317.02 and 120,941.63 is: 181,392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,908.77 : 421,317.02 = 120,941.63 : x
  2. Step 2: Convert to fraction form
    280,908.77/421,317.02 = 120,941.63/x
  3. Step 3: Cross multiply
    280,908.77x = 421,317.02 × 120,941.63
  4. Step 4: Simplify right side
    280,908.77x = 50,954,765,638.72
  5. Step 5: Solve for x
    x = 50,954,765,638.72/280,908.77
  6. Step 6: Final answer
    x = 181,392.58

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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.