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Finding the Fourth Proportional to 382,643.20, 573,964.80 and 340,652.80

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Solution

The fourth proportional to 382,643.20, 573,964.80 and 340,652.80 is: 510,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,643.20 : 573,964.80 = 340,652.80 : x
  2. Step 2: Convert to fraction form
    382,643.20/573,964.80 = 340,652.80/x
  3. Step 3: Cross multiply
    382,643.20x = 573,964.80 × 340,652.80
  4. Step 4: Simplify right side
    382,643.20x = 195,522,716,221.44
  5. Step 5: Solve for x
    x = 195,522,716,221.44/382,643.20
  6. Step 6: Final answer
    x = 510,979.20

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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.