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Finding the Fourth Proportional to 215,956.96, 298,026.94 and 120,461.60

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Solution

The fourth proportional to 215,956.96, 298,026.94 and 120,461.60 is: 166,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,956.96 : 298,026.94 = 120,461.60 : x
  2. Step 2: Convert to fraction form
    215,956.96/298,026.94 = 120,461.60/x
  3. Step 3: Cross multiply
    215,956.96x = 298,026.94 × 120,461.60
  4. Step 4: Simplify right side
    215,956.96x = 35,900,802,479.42
  5. Step 5: Solve for x
    x = 35,900,802,479.42/215,956.96
  6. Step 6: Final answer
    x = 166,240.55

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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.