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Finding the Fourth Proportional to 443,080.60, 664,620.90 and 162,561.40

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Solution

The fourth proportional to 443,080.60, 664,620.90 and 162,561.40 is: 243,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,080.60 : 664,620.90 = 162,561.40 : x
  2. Step 2: Convert to fraction form
    443,080.60/664,620.90 = 162,561.40/x
  3. Step 3: Cross multiply
    443,080.60x = 664,620.90 × 162,561.40
  4. Step 4: Simplify right side
    443,080.60x = 108,041,703,973.26
  5. Step 5: Solve for x
    x = 108,041,703,973.26/443,080.60
  6. Step 6: Final answer
    x = 243,842.10

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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.