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Finding the Fourth Proportional to 443,670.40, 664,630.80 and 265,648.60

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Solution

The fourth proportional to 443,670.40, 664,630.80 and 265,648.60 is: 397,949.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,670.40 : 664,630.80 = 265,648.60 : x
  2. Step 2: Convert to fraction form
    443,670.40/664,630.80 = 265,648.60/x
  3. Step 3: Cross multiply
    443,670.40x = 664,630.80 × 265,648.60
  4. Step 4: Simplify right side
    443,670.40x = 176,558,241,536.88
  5. Step 5: Solve for x
    x = 176,558,241,536.88/443,670.40
  6. Step 6: Final answer
    x = 397,949.11

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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.