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Finding the Fourth Proportional to 215,955.80, 298,018.80 and 120,462.44

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Solution

The fourth proportional to 215,955.80, 298,018.80 and 120,462.44 is: 166,238.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,955.80 : 298,018.80 = 120,462.44 : x
  2. Step 2: Convert to fraction form
    215,955.80/298,018.80 = 120,462.44/x
  3. Step 3: Cross multiply
    215,955.80x = 298,018.80 × 120,462.44
  4. Step 4: Simplify right side
    215,955.80x = 35,900,071,813.87
  5. Step 5: Solve for x
    x = 35,900,071,813.87/215,955.80
  6. Step 6: Final answer
    x = 166,238.05

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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.