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Finding the Fourth Proportional to 360,632.80, 539,912.40 and 220,664.80

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Solution

The fourth proportional to 360,632.80, 539,912.40 and 220,664.80 is: 330,362.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,632.80 : 539,912.40 = 220,664.80 : x
  2. Step 2: Convert to fraction form
    360,632.80/539,912.40 = 220,664.80/x
  3. Step 3: Cross multiply
    360,632.80x = 539,912.40 × 220,664.80
  4. Step 4: Simplify right side
    360,632.80x = 119,139,661,763.52
  5. Step 5: Solve for x
    x = 119,139,661,763.52/360,632.80
  6. Step 6: Final answer
    x = 330,362.80

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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.