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Finding the Fourth Proportional to 443,841.60, 665,373.60 and 266,419.20

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Solution

The fourth proportional to 443,841.60, 665,373.60 and 266,419.20 is: 399,395.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,841.60 : 665,373.60 = 266,419.20 : x
  2. Step 2: Convert to fraction form
    443,841.60/665,373.60 = 266,419.20/x
  3. Step 3: Cross multiply
    443,841.60x = 665,373.60 × 266,419.20
  4. Step 4: Simplify right side
    443,841.60x = 177,268,302,213.12
  5. Step 5: Solve for x
    x = 177,268,302,213.12/443,841.60
  6. Step 6: Final answer
    x = 399,395.42

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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.