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Finding the Fourth Proportional to 479,321.60, 718,982.40 and 163,731.20

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Solution

The fourth proportional to 479,321.60, 718,982.40 and 163,731.20 is: 245,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,321.60 : 718,982.40 = 163,731.20 : x
  2. Step 2: Convert to fraction form
    479,321.60/718,982.40 = 163,731.20/x
  3. Step 3: Cross multiply
    479,321.60x = 718,982.40 × 163,731.20
  4. Step 4: Simplify right side
    479,321.60x = 117,719,851,130.88
  5. Step 5: Solve for x
    x = 117,719,851,130.88/479,321.60
  6. Step 6: Final answer
    x = 245,596.80

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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.