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Finding the Fourth Proportional to 262,859.20, 394,288.80 and 163,650.40

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Solution

The fourth proportional to 262,859.20, 394,288.80 and 163,650.40 is: 245,475.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,859.20 : 394,288.80 = 163,650.40 : x
  2. Step 2: Convert to fraction form
    262,859.20/394,288.80 = 163,650.40/x
  3. Step 3: Cross multiply
    262,859.20x = 394,288.80 × 163,650.40
  4. Step 4: Simplify right side
    262,859.20x = 64,525,519,835.52
  5. Step 5: Solve for x
    x = 64,525,519,835.52/262,859.20
  6. Step 6: Final answer
    x = 245,475.60

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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.