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Finding the Fourth Proportional to 262,821.70, 394,232.55 and 163,612.90

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Solution

The fourth proportional to 262,821.70, 394,232.55 and 163,612.90 is: 245,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,821.70 : 394,232.55 = 163,612.90 : x
  2. Step 2: Convert to fraction form
    262,821.70/394,232.55 = 163,612.90/x
  3. Step 3: Cross multiply
    262,821.70x = 394,232.55 × 163,612.90
  4. Step 4: Simplify right side
    262,821.70x = 64,501,530,779.90
  5. Step 5: Solve for x
    x = 64,501,530,779.90/262,821.70
  6. Step 6: Final answer
    x = 245,419.35

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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.