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Finding the Fourth Proportional to 355,469.92, 533,415.38 and 130,987.73

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Solution

The fourth proportional to 355,469.92, 533,415.38 and 130,987.73 is: 196,559.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,469.92 : 533,415.38 = 130,987.73 : x
  2. Step 2: Convert to fraction form
    355,469.92/533,415.38 = 130,987.73/x
  3. Step 3: Cross multiply
    355,469.92x = 533,415.38 × 130,987.73
  4. Step 4: Simplify right side
    355,469.92x = 69,870,870,451.89
  5. Step 5: Solve for x
    x = 69,870,870,451.89/355,469.92
  6. Step 6: Final answer
    x = 196,559.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.