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Finding the Fourth Proportional to 400,196.48, 600,231.84 and 130,334.40

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Solution

The fourth proportional to 400,196.48, 600,231.84 and 130,334.40 is: 195,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,196.48 : 600,231.84 = 130,334.40 : x
  2. Step 2: Convert to fraction form
    400,196.48/600,231.84 = 130,334.40/x
  3. Step 3: Cross multiply
    400,196.48x = 600,231.84 × 130,334.40
  4. Step 4: Simplify right side
    400,196.48x = 78,230,856,727.30
  5. Step 5: Solve for x
    x = 78,230,856,727.30/400,196.48
  6. Step 6: Final answer
    x = 195,481.12

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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.