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Finding the Fourth Proportional to 215,841.90, 297,847.83 and 120,342.90

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Solution

The fourth proportional to 215,841.90, 297,847.83 and 120,342.90 is: 166,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,841.90 : 297,847.83 = 120,342.90 : x
  2. Step 2: Convert to fraction form
    215,841.90/297,847.83 = 120,342.90/x
  3. Step 3: Cross multiply
    215,841.90x = 297,847.83 × 120,342.90
  4. Step 4: Simplify right side
    215,841.90x = 35,843,871,620.91
  5. Step 5: Solve for x
    x = 35,843,871,620.91/215,841.90
  6. Step 6: Final answer
    x = 166,065.40

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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.