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Finding the Fourth Proportional to 443,328.60, 664,992.90 and 177,130.20

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Solution

The fourth proportional to 443,328.60, 664,992.90 and 177,130.20 is: 265,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,328.60 : 664,992.90 = 177,130.20 : x
  2. Step 2: Convert to fraction form
    443,328.60/664,992.90 = 177,130.20/x
  3. Step 3: Cross multiply
    443,328.60x = 664,992.90 × 177,130.20
  4. Step 4: Simplify right side
    443,328.60x = 117,790,325,375.58
  5. Step 5: Solve for x
    x = 117,790,325,375.58/443,328.60
  6. Step 6: Final answer
    x = 265,695.30

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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.