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Finding the Fourth Proportional to 279,953.22, 420,103.98 and 113,741.22

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Solution

The fourth proportional to 279,953.22, 420,103.98 and 113,741.22 is: 170,682.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,953.22 : 420,103.98 = 113,741.22 : x
  2. Step 2: Convert to fraction form
    279,953.22/420,103.98 = 113,741.22/x
  3. Step 3: Cross multiply
    279,953.22x = 420,103.98 × 113,741.22
  4. Step 4: Simplify right side
    279,953.22x = 47,783,139,212.06
  5. Step 5: Solve for x
    x = 47,783,139,212.06/279,953.22
  6. Step 6: Final answer
    x = 170,682.58

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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.