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Finding the Fourth Proportional to 215,861.04, 297,866.52 and 120,358.80

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Solution

The fourth proportional to 215,861.04, 297,866.52 and 120,358.80 is: 166,083.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,861.04 : 297,866.52 = 120,358.80 : x
  2. Step 2: Convert to fraction form
    215,861.04/297,866.52 = 120,358.80/x
  3. Step 3: Cross multiply
    215,861.04x = 297,866.52 × 120,358.80
  4. Step 4: Simplify right side
    215,861.04x = 35,850,856,907.38
  5. Step 5: Solve for x
    x = 35,850,856,907.38/215,861.04
  6. Step 6: Final answer
    x = 166,083.04

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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.