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Finding the Fourth Proportional to 443,813.60, 665,720.40 and 177,615.20

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Solution

The fourth proportional to 443,813.60, 665,720.40 and 177,615.20 is: 266,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,813.60 : 665,720.40 = 177,615.20 : x
  2. Step 2: Convert to fraction form
    443,813.60/665,720.40 = 177,615.20/x
  3. Step 3: Cross multiply
    443,813.60x = 665,720.40 × 177,615.20
  4. Step 4: Simplify right side
    443,813.60x = 118,242,061,990.08
  5. Step 5: Solve for x
    x = 118,242,061,990.08/443,813.60
  6. Step 6: Final answer
    x = 266,422.80

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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.