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Finding the Fourth Proportional to 299,810.16, 449,668.80 and 131,293.44

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Solution

The fourth proportional to 299,810.16, 449,668.80 and 131,293.44 is: 196,919.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,810.16 : 449,668.80 = 131,293.44 : x
  2. Step 2: Convert to fraction form
    299,810.16/449,668.80 = 131,293.44/x
  3. Step 3: Cross multiply
    299,810.16x = 449,668.80 × 131,293.44
  4. Step 4: Simplify right side
    299,810.16x = 59,038,563,612.67
  5. Step 5: Solve for x
    x = 59,038,563,612.67/299,810.16
  6. Step 6: Final answer
    x = 196,919.82

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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.