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Finding the Fourth Proportional to 330,254.96, 455,790.76 and 196,118.96

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Solution

The fourth proportional to 330,254.96, 455,790.76 and 196,118.96 is: 270,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,254.96 : 455,790.76 = 196,118.96 : x
  2. Step 2: Convert to fraction form
    330,254.96/455,790.76 = 196,118.96/x
  3. Step 3: Cross multiply
    330,254.96x = 455,790.76 × 196,118.96
  4. Step 4: Simplify right side
    330,254.96x = 89,389,209,828.81
  5. Step 5: Solve for x
    x = 89,389,209,828.81/330,254.96
  6. Step 6: Final answer
    x = 270,667.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.