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Finding the Fourth Proportional to 255,954.60, 353,242.68 and 191,311.80

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Solution

The fourth proportional to 255,954.60, 353,242.68 and 191,311.80 is: 264,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,954.60 : 353,242.68 = 191,311.80 : x
  2. Step 2: Convert to fraction form
    255,954.60/353,242.68 = 191,311.80/x
  3. Step 3: Cross multiply
    255,954.60x = 353,242.68 × 191,311.80
  4. Step 4: Simplify right side
    255,954.60x = 67,579,492,947.62
  5. Step 5: Solve for x
    x = 67,579,492,947.62/255,954.60
  6. Step 6: Final answer
    x = 264,029.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.