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Finding the Fourth Proportional to 321,252.80, 481,879.20 and 155,364.80

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Solution

The fourth proportional to 321,252.80, 481,879.20 and 155,364.80 is: 233,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,252.80 : 481,879.20 = 155,364.80 : x
  2. Step 2: Convert to fraction form
    321,252.80/481,879.20 = 155,364.80/x
  3. Step 3: Cross multiply
    321,252.80x = 481,879.20 × 155,364.80
  4. Step 4: Simplify right side
    321,252.80x = 74,867,065,532.16
  5. Step 5: Solve for x
    x = 74,867,065,532.16/321,252.80
  6. Step 6: Final answer
    x = 233,047.20

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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.