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Finding the Fourth Proportional to 262,378.40, 394,442.40 and 223,887.20

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Solution

The fourth proportional to 262,378.40, 394,442.40 and 223,887.20 is: 336,577.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,378.40 : 394,442.40 = 223,887.20 : x
  2. Step 2: Convert to fraction form
    262,378.40/394,442.40 = 223,887.20/x
  3. Step 3: Cross multiply
    262,378.40x = 394,442.40 × 223,887.20
  4. Step 4: Simplify right side
    262,378.40x = 88,310,604,497.28
  5. Step 5: Solve for x
    x = 88,310,604,497.28/262,378.40
  6. Step 6: Final answer
    x = 336,577.27

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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.