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Finding the Fourth Proportional to 384,018.80, 576,028.20 and 321,810.80

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Solution

The fourth proportional to 384,018.80, 576,028.20 and 321,810.80 is: 482,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,018.80 : 576,028.20 = 321,810.80 : x
  2. Step 2: Convert to fraction form
    384,018.80/576,028.20 = 321,810.80/x
  3. Step 3: Cross multiply
    384,018.80x = 576,028.20 × 321,810.80
  4. Step 4: Simplify right side
    384,018.80x = 185,372,095,864.56
  5. Step 5: Solve for x
    x = 185,372,095,864.56/384,018.80
  6. Step 6: Final answer
    x = 482,716.20

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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.