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Finding the Fourth Proportional to 442,999.70, 664,499.55 and 253,265.30

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Solution

The fourth proportional to 442,999.70, 664,499.55 and 253,265.30 is: 379,897.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,999.70 : 664,499.55 = 253,265.30 : x
  2. Step 2: Convert to fraction form
    442,999.70/664,499.55 = 253,265.30/x
  3. Step 3: Cross multiply
    442,999.70x = 664,499.55 × 253,265.30
  4. Step 4: Simplify right side
    442,999.70x = 168,294,677,880.62
  5. Step 5: Solve for x
    x = 168,294,677,880.62/442,999.70
  6. Step 6: Final answer
    x = 379,897.95

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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.