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Finding the Fourth Proportional to 442,893.90, 664,276.05 and 127,317.90

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Solution

The fourth proportional to 442,893.90, 664,276.05 and 127,317.90 is: 190,958.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,893.90 : 664,276.05 = 127,317.90 : x
  2. Step 2: Convert to fraction form
    442,893.90/664,276.05 = 127,317.90/x
  3. Step 3: Cross multiply
    442,893.90x = 664,276.05 × 127,317.90
  4. Step 4: Simplify right side
    442,893.90x = 84,574,231,706.30
  5. Step 5: Solve for x
    x = 84,574,231,706.30/442,893.90
  6. Step 6: Final answer
    x = 190,958.22

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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.