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Finding the Fourth Proportional to 262,969.70, 394,195.35 and 129,740.90

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Solution

The fourth proportional to 262,969.70, 394,195.35 and 129,740.90 is: 194,483.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,969.70 : 394,195.35 = 129,740.90 : x
  2. Step 2: Convert to fraction form
    262,969.70/394,195.35 = 129,740.90/x
  3. Step 3: Cross multiply
    262,969.70x = 394,195.35 × 129,740.90
  4. Step 4: Simplify right side
    262,969.70x = 51,143,259,484.82
  5. Step 5: Solve for x
    x = 51,143,259,484.82/262,969.70
  6. Step 6: Final answer
    x = 194,483.47

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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.