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Finding the Fourth Proportional to 400,136.72, 600,205.64 and 163,479.60

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Solution

The fourth proportional to 400,136.72, 600,205.64 and 163,479.60 is: 245,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,136.72 : 600,205.64 = 163,479.60 : x
  2. Step 2: Convert to fraction form
    400,136.72/600,205.64 = 163,479.60/x
  3. Step 3: Cross multiply
    400,136.72x = 600,205.64 × 163,479.60
  4. Step 4: Simplify right side
    400,136.72x = 98,121,377,944.94
  5. Step 5: Solve for x
    x = 98,121,377,944.94/400,136.72
  6. Step 6: Final answer
    x = 245,219.63

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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.