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Finding the Fourth Proportional to 262,395, 393,679.38 and 129,366.84

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Solution

The fourth proportional to 262,395, 393,679.38 and 129,366.84 is: 194,093.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,395 : 393,679.38 = 129,366.84 : x
  2. Step 2: Convert to fraction form
    262,395/393,679.38 = 129,366.84/x
  3. Step 3: Cross multiply
    262,395x = 393,679.38 × 129,366.84
  4. Step 4: Simplify right side
    262,395x = 50,929,057,363.76
  5. Step 5: Solve for x
    x = 50,929,057,363.76/262,395
  6. Step 6: Final answer
    x = 194,093.09

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1.5x scale

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.