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Finding the Fourth Proportional to 170,272.90, 255,423.99 and 43,912

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Solution

The fourth proportional to 170,272.90, 255,423.99 and 43,912 is: 65,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,272.90 : 255,423.99 = 43,912 : x
  2. Step 2: Convert to fraction form
    170,272.90/255,423.99 = 43,912/x
  3. Step 3: Cross multiply
    170,272.90x = 255,423.99 × 43,912
  4. Step 4: Simplify right side
    170,272.90x = 11,216,178,248.88
  5. Step 5: Solve for x
    x = 11,216,178,248.88/170,272.90
  6. Step 6: Final answer
    x = 65,871.78

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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.