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Finding the Fourth Proportional to 362,028.80, 543,043.20 and 221,866.40

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Solution

The fourth proportional to 362,028.80, 543,043.20 and 221,866.40 is: 332,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,028.80 : 543,043.20 = 221,866.40 : x
  2. Step 2: Convert to fraction form
    362,028.80/543,043.20 = 221,866.40/x
  3. Step 3: Cross multiply
    362,028.80x = 543,043.20 × 221,866.40
  4. Step 4: Simplify right side
    362,028.80x = 120,483,039,828.48
  5. Step 5: Solve for x
    x = 120,483,039,828.48/362,028.80
  6. Step 6: Final answer
    x = 332,799.60

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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.