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Finding the Fourth Proportional to 262,952.10, 394,428.15 and 129,852.90

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Solution

The fourth proportional to 262,952.10, 394,428.15 and 129,852.90 is: 194,779.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,952.10 : 394,428.15 = 129,852.90 : x
  2. Step 2: Convert to fraction form
    262,952.10/394,428.15 = 129,852.90/x
  3. Step 3: Cross multiply
    262,952.10x = 394,428.15 × 129,852.90
  4. Step 4: Simplify right side
    262,952.10x = 51,217,639,119.14
  5. Step 5: Solve for x
    x = 51,217,639,119.14/262,952.10
  6. Step 6: Final answer
    x = 194,779.35

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Similar ratio
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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.